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Malpractice claims against patent attorneys necessarily rely on federal law because the fiduciary duties owed by patent counsel are governed by federal statutes and the manual of patent examination procedure
  • Winston & Strawn LLP
  • USA
  • June 2 2010

The initial controversy before the district court concerned fifteen claims made by the plaintiff-inventorunder a combination of federal and state lawagainst his former patent counsel and employer, alleging the improper listing of a co-inventor on the patent application and improper legal representation of that individual due to the conflicting interests of the plaintiff


The fact that a patentee used equivocal language when communicating with an accused infringer will not prevent a court from applying equitable estoppel
  • Winston & Strawn LLP
  • USA
  • June 2 2010

The district court granted the accused infringer’s motion for dismissal on equitable estoppel grounds based on the patentee’s three years of silence after contacting the accused infringer concerning infringement


Oral testimony can be used to prove the scope of a printed publication as an anticipating reference
  • Winston & Strawn LLP
  • USA
  • June 2 2010

A jury found the patent infringed and valid


No “prudential reasons” or perceived increases in efficiency can trump the lack of a case or controversy brought about by a covenant not to sue that extinguishes all current and future claims
  • Winston & Strawn LLP
  • USA
  • June 2 2010

The alleged infringer brought a declaratory judgment action alleging invalidity and non-infringement of two patents


A patent’s preamble limits the invention only if it recites essential structure or steps, or is necessary to give life, meaning, and vitality to the claim
  • Winston & Strawn LLP
  • USA
  • June 2 2010

The patent-in-suit related to technology intended to decrease the time needed to decode digital television transmissions



The Forest Group, Inc. v. Bon Tool Company
  • Winston & Strawn LLP
  • USA
  • January 5 2010

35 U.S.C. 292 requires a penalty for falsely marking articles with a patent or patent number on a per article basis, rather than for each decision to falsely mark


SEB, S.A. v. Montgomery Ward & Co. Inc
  • Winston & Strawn LLP
  • USA
  • February 10 2010

Without fully defining the territorial limits of infringement, no fundamental error occurred in finding products shipped to the United States and intended for the United States market as infringing


Laboratory Corporation of America Holdings v. Metabolite Laboratories, Inc
  • Winston & Strawn LLP
  • USA
  • March 16 2010

When infringement is not at issue, a lawsuit for breach of know-how and patent license agreement does not arise under patent law


Crocs, Inc. v. International Trade Commission et al., No. 2008-1596 (Fed. Cir. Feb. 24, 2010)
  • Winston & Strawn LLP
  • USA
  • March 2 2010

For determining whether infringement and the existence of a domestic industry are satisfied in a 337 action regarding design patents, courts must apply the ordinary observer test instead of relying on a detailed verbal description of the claimed design