Microsoft Corporation ("Microsoft") filed suit against Corel Corporation and Corel Inc. (“Corel”) in the Northern District Court of California, seeking to recover damages and costs for patent infringement.

In the complaint, Microsoft alleges Corel willfully infringes a number of Microsoft utility and design patents.  In particular, Microsoft accuses Corel of infringing U.S. Patent Nos. 8,255,828 (“the ‘828 patent”); 7,703,036 (“the ‘036 patent”); 7,047,501 (“the ‘501 patent”); 5,715,415 (“the ‘415 patent”); 5,510,980 (“the ‘980 patent”); D550,237 (“the D‘237 patent”); D554,140 (“the D‘140 patent”); D564,532 (“the D‘532 patent”); and D570,865 (“the D‘865 patent”), all relating to aspects of graphical user interfaces ("GUIs") used in productivity software applications, such as Microsoft Office.

The four design patents forming the basis for part of the complaint are directed to "ornamental designs for parts of Microsoft user interfaces, including the Microsoft Ribbon" and, according to Microsoft, "Corel's advertising makes the copied Microsoft interfaces one of the central selling points of Corel's products:  'With a familiar Ribbon-style interface, Corel® Office looks like the office software you're used to, making it easy to get to work right away.'"  

Accused Corel products associated with the asserted design patents include CorelCAD 2014-2016 and Corel Home Office, which includes Corel Write, Corel Calculate, and Corel Show.

Regarding the D’237 patent, entitled “User Interface for a Portion of a Display Screen,” the complaint provides a comparision of the claimed design and certain aspects of accused Corel Home Office products.

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Regarding the D’140 patent, also entitled “User Interface for a Portion of a Display Screen,” the complaint provides the claimed design in comparision with aspects of accused Corel Home Office products.

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The complaint also provides a figure from the D’532 patent, which is entitled “User Interface for a Portion of a Display Screen,” matched with an aspect of CorelCAD 2014-2016.

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Regarding the D’865 patent, entitled “User Interface for a Portion of a Display Screen,” the complaint provides the claimed design in comparision with aspects of accused Corel Home Office products.

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