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Applying for a patent


What are the criteria for patentability in your jurisdiction?

As per the Patents Act 1970, the basic criteria for patentability of an invention are as follows:

  • Novelty – the invention should be new and not disclosed to the public anywhere in the world in any form or through any medium.
  • Non-obvious – the invention should not be obvious to a person skilled in the art in the relevant area of technology and should involve an inventive feature which is distinctive in nature from the previous inventions made in the same field.
  • Industrial application – the new product or process should be capable of being made or used in an industry and it should have economic significance.

What are the limits on patentability?

Under Section 3 of the act, the following inventions are not considered patentable:

  • an invention which is frivolous or which claims anything obviously contrary to well-established natural laws;
  • an invention whose primary or intended use or commercial exploitation is contrary to public order or morality or which causes serious prejudice to human, animal or plant life, health or the environment;
  • the mere discovery of a scientific principle or the formulation of an abstract theory;
  • the discovery of a living thing or a non-living substance occurring in nature;
  • the mere discovery of a new form of a known substance which does not enhance the known efficacy of that substance, the mere discovery of a new property or new use for a known substance or the mere use of a known process, machine or apparatus unless the known process results in a new product or employs at least one new reactant (for the purposes of this clause, salts, esters, ethers, polymorphs, metabolites, pure form, particle size, isomers, mixtures of isomers, complexes, combinations and other derivatives of known substance will be considered to be the same substance, unless they differ significantly in properties with regard to efficacy);
  • a substance obtained by a mere admixture resulting only in the aggregation of the properties of the components thereof or a process for producing such substance;
  • the mere arrangement, rearrangement or duplication of known devices which function independently of one another in a known way;
  • a method of agriculture or horticulture;
  • any process for the medicinal, surgical, curative, prophylactic diagnostic, therapeutic or other treatment of human beings, or any process for a similar treatment of animals to render them free of disease or to increase their economic value or that of their products;
  • plants and animals in whole or any part thereof other than microorganisms, including seeds, varieties and species and essentially biological processes for production or propagation of plants and animals;
  • a mathematical or business method, a computer programme per se or algorithms;
  • a literary, dramatic, musical or artistic work or any other aesthetic creation, including cinematographic works and television productions;
  • a mere scheme, rule or method of performing a mental act or playing a game;
  • a presentation of information;
  • the topography of integrated circuits; or
  • an invention which, in effect, is traditional knowledge or an aggregation or duplication of known properties of traditionally known component or components.


To what extent can inventions covering software be patented?

On June 30 2017 the Patent Office released revised Guidelines for Examination of Computer Related Inventions (CRIs) in furtherance to its continuous efforts to provide clarity and maintain homogeneity in the process of examination of patent applications pertaining to CRIs.

The first set of guidelines were released in 2015 and were kept in abeyance owing to numerous representations that were sent to the Patent Office by interested parties. Subsequently, revised guidelines were released in 2016, which stressed the requirement of novel hardware and directed the examiners to deny patents which even remotely related to mathematical methods, business methods and algorithms.

The 2016 guidelines discussed various procedures which were to be adopted by the Patent Office, while examining applications and jurisprudence that evolved in this field. Although the new guidelines state that the claim should be denied if the invention’s only contribution relates to a computer program, the granting of a patent for a software-related invention is not ruled out. However, the guidelines emphasise that “a computer program per se” is not patentable unless it is in combination with hardware, which must be more than a general-purpose machine.

Further, as patents are granted to inventions in all fields of technology, it is important to ascertain from the nature of the claimed computer-related invention whether it is of a technical nature involving technical advancement compared to the existing knowledge, or whether it has economic significance and is not subject to exclusion under Section 3(k) of the Patents Act 1970.

Section 3(k) states that “a mathematical or business method or a computer programme per se or algorithms” are not patentable.

In this context, the 2015 guidelines adopted a much broader interpretation of Section 3(k), considering the subject matter of a novel computer program with known hardware, which goes beyond the normal interaction with such hardware and affects a change in the functionality or performance of the existing hardware to be patentable.

The 2015 guidelines further emphasised that a computer program, when running on or loaded into a computer, went beyond normal physical interactions between the software and the hardware on which it is run, and is capable of bringing further technical effect may not be considered as an exclusion under these provisions.

However, after much debate, the 2015 guidelines were narrowed and the 2016 guidelines stated that if the contribution lies in the field of computer programming it must be connected to novel hardware. If the contribution lies solely in a computer program, it is not patentable.

Finally, the 2017 guidelines superseded the 2016 guidelines. The 2017 guidelines are in substance based on the 2016 guidelines and reiterate that while assessing the patentability of CRIs the focus should be on the underlying substance of the invention and not the particular form in which it is claimed.

However, the 2017 guidelines have done away with the requirement of novel hardware by deleting the Stage 3 test to determine the patentability of CRIs and the ensuing restrictive illustrative examples of claims which are considered not to be patentable, thus leaving more room for interpretation as to what constitutes patentable subject matter.

To what extent can inventions covering business methods be patented?

According to Section 3(k) of the Patents Act 1970, business methods are not patentable. Further, the Manual of Patent Office Practice and Procedure in India provides that business methods claimed in any form are not patentable subject matter. Moreover, it emphasises that this exclusion applies to all business methods; therefore, even if business methods are claimed along with some technical features such as the Internet, networks, satellites and telecommunications, they do not qualify as patentable subject matter and may fall under the purview of Section 3(k).

To what extent can inventions relating to stem cells be patented?

Section 3(j) of the Patents Act 1970 states that “plants and animals in whole or any part thereof other than micro-organisms but including seeds, varieties and species and essentially biological processes for production or propagation of plants and animals" are not patentable.

Stem cells are considered to fall under the phrase “any part thereof” and hence are excluded from patentability. However, in vitro methods of differentiating, isolating/purifying and culturing of stem cells may qualify as patentable subject matter, provided that the method is novel, involves an inventive step and has industrial applicability.

In addition, inventions pertaining to stem cells may also be opposed under Section 3(b) of the act, which prohibits the grant of patent to:

an invention the primary or intended use or commercial exploitation of which could be contrary to public order or morality or which causes serious prejudice to human, animal or plant life or health or to the environment.

Are there restrictions on any other kinds of invention?

Apart from the exclusions under Section 3 of the Patents Act 1970, Section 4 also imposes a strict prohibition on the patentability of inventions related to atomic energy.

Grace period

Does your jurisdiction have a grace period? If so, how does it work?

Section 31 of the Patents Act 1970 provides a grace period of 12 months for filing a patent application from:

  • the date of its publication in a journal;
  • its public display (with the inventor’s consent) in an exhibition organised by the government; or
  • the date of disclosure in a paper read by the inventor before a learned society or published with his or her consent by such society.  

This applies to exhibitions to which Section 31 has been extended by the government by notification in the Official Gazette.

In addition, Section 32 also provides a 12-month grace period in case of anticipation by public working. The invention cannot be anticipated by public working in India within one year before the priority date of the invention by the patentee, the applicant or any person deriving title therefrom, provided that the working was effected for the purpose of reasonable trial only and it was necessary, having regard to the nature of the invention, for the working to be effected in public.


What types of patent opposition procedure are available in your jurisdiction?

Two types of patent opposition procedure are available in India:

  • pre-grant opposition; and
  • post-grant opposition.  

Pre-grant opposition

A pre-grant opposition against the grant of a patent is prescribed under Section 25(1) of the Patents Act 1970 and can be filed at any time before the grant of the patent by any person, but only after the publication of the patent. It may be filed on the following grounds:

  • The invention has been wrongfully obtained.
  • The invention is anticipated by a prior publication.
  • The invention is anticipated by a prior claim in India.
  • The invention is publicly known or used in India.
  • The invention is obvious and lacks inventive step.
  • The invention comprises non patentable subject matter.
  • The invention is insufficiently disclosed.
  • The invention is anticipated by the traditional knowledge of any community in India or elsewhere.
  • The application fails to disclose information in respect of corresponding foreign applications or provides false information.
  • The application was not filed within 12 months of the date of the first application.
  • The application makes false mention of or fails to disclose biological material.  

Post-grant opposition A post-grant opposition as prescribed under Section 25(2) of the Patents Act 1970 can be filed by any person interested within 12 months of the date of publication of grant. A post-grant opposition can also be made on the same grounds as a pre-grant opposition.  

Apart from oppositions, are there any other ways to challenge a patent outside the courts?

A patent granted before or after the commencement of the Patents Act 1970 may be revoked:

  • by the Intellectual Property Appellate Board on the petition of any person or the government; or
  • by the high court on a counterclaim in a suit for infringement of the patent.  

Under Section 64 of the act, a patent may be revoked based on any of the following grounds:

  • The invention has been claimed in the complete specification of another granted patent in India with an earlier priority date.
  • The patent has been granted on the application of a person not entitled to apply under the act.
  • The patent contravenes the rights of the petitioner or any person under or through whom he claims.
  • The subject matter of any claim in the specification is not an invention under the act.
  • The invention is not novel.
  • The invention is obvious or involves no inventive step.
  • The invention is not useful.
  • The complete specification does not sufficiently and fairly describe the invention and the method by which it is to be performed.
  • The scope of any claim of the complete specification is not sufficiently and clearly defined or that any claim of the complete specification is not fairly based on what is disclosed in the specification.
  • The patent was obtained on a false suggestion or representation.
  • The patent covers non-patentable subject matter under the act.
  • The invention was secretly used in India before the priority date of the claim.
  • The application contained false or no information in respect of a corresponding foreign applications.
  • The applicant contravened a direction for secrecy passed or applied for grant of a patent outside India without prior permission.
  • The applicant’s leave to amend the complete specification was obtained by fraud.
  • The application mentioned an incorrect source or geographical origin of biological material, or failed to mention the source or origin.
  • The invention is anticipated by the traditional knowledge of any community in India or elsewhere.

How can patent office decisions be appealed in your jurisdiction?

An appeal will result from the decision of the controller of the patent office or the government by orders issued under sections 15, 16, 17, 18, 19, 20, 25(4), 28, 51, 54, 57, 60, 61, 63, 66, 69(3), 78, 84(1)-(5), 85, 88, 91, 92 and 94:

  • matters involving the amendment of applications;
  • matters involving patents of addition;
  • matters involving the division of applications;
  • matters involving the dating of applications;
  • cases involving decisions pertaining to the refusal of applications for failure to comply with the act;
  • matters involving decisions related to anticipation;
  • cases involving decisions pertaining to potential infringement;
  • cases involving decisions pertaining to the substitution of applicants;
  • decisions involving the maintenance, amendment or revocation of a patent;
  • matters involving the names of inventors;
  • matters involving directions given by the controller to the patent’s co-owners;
  • matters involving restoration of a lapsed patent;
  • matters involving the surrender of patents;
  • cases involving decisions pertaining to the revocation of patents in the public interest;
  • cases involving decisions pertaining to the revocation of patents for non-working;
  • matters involving the registration of assignments and transmissions;
  • matters involving the correction of clerical errors;
  • matters involving compulsory licences; and
  • cases involving decisions pertaining to the licensing of related patents.  

Appeals from any decision of the Intellectual Property Appellate Board can be appealed to the High Court in the form of a writ petition filed under Articles 226 and 227 of the Constitution. 

Timescale and costs

How long should an applicant expect to wait before being granted a patent and what level of cost should it budget for?

Time In India, the patent registration process usually used to take between three and seven years. However, with the introduction of the Patent (Amendment Rules) 2016, which came into force on May 16 2016, this time is expected to be reduced to two to three years, as the time to file a reply to the first statement of objections has been reduced to six months (previously, it was 12 months).

In addition, the new rules require the controller to deal with an application within three months of receipt of the last reply to the first statement of objections, or within three months from the final date to apply, whichever is earlier. Further, the new rules provide for expedited examination for start-ups and applications in which India is chosen as the international searching authority or the international preliminary examining authority. In recent cases, start-ups have received a grant in less than 12 months from filing the application in India.

An applicant in India can start commercialising its patent as soon as the patent application has been filed.


The approximate costs involved in prosecuting a patent application through to registration in India range from $3,000 to $5,000 (excluding annuity fees) – each application contains one priority, 10 claims and 30 pages of specification. 

Enforcement through the courts


What are the most effective ways for a patent owner to enforce its rights in your jurisdiction?

In recent years, the Indian courts have shown zeal and dynamism for the effective protection of IP rights, particularly in respect of patents. The most effective way to enforce patent rights includes a civil action seeking the following remedies:

  • a temporary injunction – the court can impose a temporary restraining order on the defendant until final disposal of the civil suit or for such time as stated in the court order;
  • a permanent injunction – the court can issue a final order restraining the defendant from carrying out activities constituting patent infringement in India;
  • damages or account of profits;
  • delivery up or destruction of infringing articles; or
  • legal costs.

A patent owner also has the following options to enforce its rights in India:

  • an Anton Piller order – the court can appoint a local commissioner on the request of the plaintiff or otherwise to hold or seal infringing materials or accounts in the defendant’s premises;
  • a Mareva injunction – the court can restrain the defendant from disposing of its assets within India until the trial ends or judgment in the patent infringement action is passed; or
  • a John Doe order – the court can order search and seizure in respect of an unknown defendant with the cooperation of the local commissioner and police, if required, to raid any premises where infringing activities are suspected to be carried out.

What scope is there for forum selection?

In India, a patent infringement suit may be filed either in a district court with jurisdiction or before a high court, depending on the pecuniary value of the civil suit (based on the damages sought, the applicable court fees and costs).

However, if a defendant counterclaims for revocation of the patent, the suit and the counterclaim are transferred to a high court. As defendants invariably counterclaim for revocation, patent infringement suits are typically heard mostly by the high courts.


What are the stages in the litigation process leading up to a full trial?

The following stages lead to a full patent trial:

Pleadings A suit is instituted before the court in the appropriate jurisdiction by the plaintiff, including a plaint (containing the facts, grounds, claims, arguments and relief claimed) and supporting documentary evidence. The plaint must comply with Orders IV (institution of suits), VI (pleadings) and VII (plaint) of the Code of Civil Procedure.

  • In addition to the plaint, the plaintiff often files separate interim applications seeking:
  • a temporary injunction in conjunction with an ex parte ad interim injunction;
  • the appointment of a local commissioner; or
  • the appointment of a scientific adviser.

The court will consider the interim applications and issue any necessary orders. In exceptional cases an ex parte ad interim injunction order can be passed on the first day of the hearing where the plaintiff can prove, based on the documents available on record:

  • a prima facie case;
  • irreparable loss and injury; and
  • the balance of convenience in its favour.

Pursuant to institution of the suit, if a court prima facie finds merit in plaintiff’s claims, it can issue a court notice to the defendant to appear before the court on a given date. The plaint is then also served on the defendant. On receiving the notice, the defendant can appear before the court to seek time to file a written reply. The plaintiff may then reply to the defendant in writing.

Admission and denial of documents At this stage the parties must produce before the court all of the documents in their possession on which they intend to rely. Thereafter, the parties must notify the court as to whether they admit or deny the documents filed by the other side. The court marks the exhibits accordingly.

Framing of issues Based on the pleadings filed by both the parties, the documents and the preliminary hearing, the court frames the main issues to be dealt with.

Discovery (optional) Discovery is the process by which a party may obtain information or documents from the opposing party before trial, through a request from the court. At this stage, depositions, requests for admission and requests for the production of documents, objects and entry may be filed.

Evidence At the evidence stage, the parties must provide evidence and confirm the veracity and genuineness of the evidence filed by an affidavit under oath. In order to prevail in a civil trial, the plaintiff may introduce competent evidence with respect to each disputed allegation, if already not filed.

Examination and cross-examination of witnesses The parties’ witnesses give statements under oath which may be questioned by the other party’s counsel. At this stage, an expert witness may be asked to appear before the court to validate the parties’ arguments or his or her own report.

Final arguments At this stage, each party’s counsel presents its case, with supporting arguments, evidence and precedents. Written arguments or submissions may also be given to the court at its discretion.

Judgment The court then pronounces its judgment.

How easy is it for defendants to delay proceedings and how can plaintiffs prevent them from doing so?

Ordinarily, the IP courts are reluctant to grant adjournments due to the time-sensitive nature of such matters. Therefore, in order to obtain an adjournment the defendant must prove beyond reasonable doubt the reason for adjournment. As a matter of practice, the courts grant adjournments subject to the payment of costs unless the reasons or circumstances are such that an adjournment is necessary in the interest of justice.

The plaintiff may prevent the other side from seeking frequent, unnecessary adjournments by raising formal objections before the court and pressing for the refusal of adjournment requests. Further, the plaintiff may press for costs so that any loss caused due to delay may be compensated. The best way to proceed is to request the court to fix a timeline for adjudication of the matter – this may be allowed depending on the court’s discretion and the urgency of the case. 

How might a party challenge the validity of a patent through the courts in anticipation of a potential suit for infringement being issued against it?

In anticipation of a potential patent infringement suit, the validity of a patent can be challenged by filing a revocation petition before the Intellectual Property Appellate Board.

At trial

What level of expertise can a patent owner expect from the courts?

The judges handling IP cases are “highly proficient” and “fully conversant” with the relevant IP laws applicable in the country. Only judges with experience or expertise in the field handle IP cases, and hence a reasonable level of expertise may be expected from the courts.

Are cases decided by one judge, a panel of judges or a jury?

The first-instance civil action is decided by a single judge in India. However, the appellate courts are often the division bench or a bench comprising of two or more judges. 

If jury trials do exist, what is the process for deciding whether a case should be put to a jury?

Not applicable. 

What role can and do expert witnesses play in proceedings?

Expert witnesses or scientific advisers (according to the Patents Act) are extremely important as far as their evidentiary value is concerned. They assist the court with the technical aspects of inventions in order to decide complex patent litigation fairly and properly. The Indian legislature is cognisant of the fact that patent law may deal with extremely intricate inventions in scientific, technological, pharmaceutical and other fields with which the courts may be unfamiliar. For this reason, Section 115 of the Patents Act provides for the appointment of a scientific adviser to provide expert assistance. In addition, Rule 103 of the Patent Rules provides the requisite qualifications for a person to qualify as a scientific adviser:

  • a degree in science, engineering or technology;
  • at least 15 years’ practical or research experience; and
  • a responsible post in a scientific or technical department of the central or state government or in any organisation.

In addition, the Indian judiciary also accepts and recognises that a person can be an expert in an area of specialised knowledge by experience and he or she need not hold a degree in that field. A person can also become an expert by virtue of their occupation.

Does your jurisdiction apply a doctrine of equivalents and, if so, how?

The Indian courts do not strictly follow the literal construction of claims and values the doctrine of equivalents based on the interpretation that claims must be “fairly based” on the matter disclosed in the specification (in line with Article 69 of the European Patent Convention). However, as yet no decision has provided clear guidelines on the interpretation of the phrase 'fairly based'. The first Indian case on the doctrine of equivalents, Ravi Kamal Bali v Kala Tech, was decided in 2008.

Is it possible to obtain preliminary injunctions? If so, under what circumstances?

The Indian courts can grant preliminary injunctions provided that the plaintiff can establish a strong prima facie case. In India, courts of appropriate jurisdiction can also grant ex parte injunctions to the plaintiff. The quintessential ingredients for an order of temporary injunction that must be proven by the plaintiff are as follows:

  • strong prima facie case;
  • irreparable loss and injury; and
  • the balance of convenience.

Therefore, to obtain a preliminary injunction, the plaintiff must prove these elements beyond reasonable doubt.

How are issues around infringement and validity treated in your jurisdiction?

In India, caution and stringency are observed in patent infringement and validity cases. The Indian patent judicial regime seeks to reduce the menace of IP infringement by adopting a strict approach while determining questions of infringement and has also adopted measures that enunciate its stringent and effective deterrence policy. Due consideration is given to:

  • the protection and promotion of innovation;
  • creativity;
  • balancing parties’ interests parties; and
  • public interest.

Deterrent measures taken under the Indian legal regime include not confining the scope of protection conferred on a claim to the literal language of the claim. 

Will courts consider decisions in cases involving similar issues from other jurisdictions?

Yes, provided that the cited facts apply to the facts brought before the court. While foreign decisions may not be binding on the Indian courts, they have strong persuasive value and due consideration is given to them by the Indian courts. 

Damages and remedies

Can the successful party obtain costs from the losing party?

Yes, in the form of damages or an account of profits. These are solely at the discretion of the court, which will take into consideration the loss and injury suffered by the successful party through the actions of the losing party.

What are the typical remedies granted to a successful plaintiff?

By way of relief, a patent owner may seek:

  • an injunction (subject to such terms as the courts think fit);
  • damages or an account of profit;
  • delivery up or destruction of infringing articles; or
  • legal costs. 

How are damages awards calculated? Are punitive damages available?

Three types of damage are granted under the Indian patent law regime:

  • direct;
  • indirect; or
  • punitive or exemplary.

Damages are recoverable from the date of publication of a patent application under Section 11A of the Patents Act 1970. The actual profit or loss made is of no consequence when calculating damages – thus, damages can exceed the actual profits made by an infringer, unlike in the case of account of profits.

Direct damages Direct damages are awarded to put the patentee in the position that it would have been in had the infringement not taken place. Ideally, they are the pecuniary equivalent of the injury caused. Damages calculations are generally based on the normal rate of profit or established and reasonable royalty rates. The court may award interest on damages at its discretion.

Indirect damages In general, indirect damages are not recoverable. However, in special cases, a patent owner may obtain damages based on the value of an “entire infringing device”, even if that device contains multiple features and only one feature is found to be infringing.

Punitive damages

Yes, punitive damages are granted as exemplary damages, which are awarded in addition to actual damages. They are intended to act as a deterrent and are considered as a way of punishing the defendant and based on the theory that the interests of society and the individual harmed can be met by imposing additional damages on the defendant.

Three factors guide the decision of whether to award punitive or exemplary damages:

  • whether the infringement was wilful or deliberate;
  • whether the infringer had a good-faith belief that the patent was invalid; and
  • the party’s conduct during the litigation.

Royalty rates are calculated based on the following factors:

  • the strength of patent portfolio;
  • the ratio of the patent ownership;
  • the total royalty rate payable on a particular product; and
  • the share of the patent owner. 

How common is it for courts to grant permanent injunctions to successful plaintiffs and under what circumstances will they do this?

The Indian courts do not hesitate to grant injunctions to successful plaintiffs, provided that strong case of infringement is established by the plaintiff with cogent evidence.

In India, a permanent injunction can be granted after a full trial. The Indian courts usually consider the US decision of eBay Inc v Merc Exchange LLC (547 US 388 (2006)), which set out a four-factor test for injunctive relief:

  • The patentee has suffered an irreparable injury.
  • Remedies available through the law (eg, monetary damages) are inadequate to compensate for that injury.
  • Considering the balance of hardships between the plaintiff and defendant, an injunction is warranted.
  • The public interest is not damaged by a permanent injunction.

The eBay decision was considered by the Delhi High Court in F Hoffmann-La Roche Ltd v Cipla Limited (148 (2008) DLT 598). There have also been several recent cases in which the Indian courts have passed injunction orders based on the merits.

Timescale and costs

How long does it take to obtain a decision at first instance and is it possible to expedite this process?

A fully contested suit may take three to five years to reach a conclusion before the appropriate court.

An order for an interim injunction may take around six to eight months. However, in exceptional circumstances and on proof of a strong prima facie case, the Indian courts – particularly the Delhi High Court – do not hesitate to grant ex parte ad interim orders at the first hearing.

How much should a litigant plan to pay to take a case through to a first-instance decision?

The costs in a patent infringement suit depends on the length and complexities of the case. Further, the official costs depend on the damages sought and the court fee applicable to each type of relief claimed in the suit, which varies from court to court.

On average, an interim decision costs up to $25,000 and a complete trial up to $60,000. However, this may vary depending on the court, the damages sought and the length and complexities of the case. Highly complex cases could cost between $100,000 and $150,000 for an interim decision and $200,000 and $350,000 for a full decision.


Under what circumstances will the losing party in a first-instance case be granted the right to appeal? How long does an appeal typically take?

As per the applicable laws and practices prevailing in India, a first-instance decision can be appealed where:

  • the impugned order was illegal, arbitrary and against the facts of the case, as well as the established principles of law;
  • the first-instance court failed to appreciate or assess material facts, arguments or documents with significant bearing on the matter or necessary for fair and proper adjudication of the dispute;
  • the impugned order is contrary to the principles of natural justice, justice, equity and good conscience or the public interest; or
  • the impugned order fails to appreciate or recognise the irreparable loss and injury that it may cause the aggrieved party.

Options away from court

Are there other dispute resolution options open to parties that believe their patents to be infringed outside the courts?

Yes, other out of court dispute resolution options are available to parties that believe their patents have been infringed –  for example, negotiations and settlement by way of licensing, a consent agreement or discontinuation of use.