Updated: July 12, 2020 (February 3, 2003)

Pending Patent Infringement Suits

Microsoft has been named as a defendant in more than 20 patent infringement lawsuits, according to its last quarterly filing with the U.S. Securities and Exchange Commission. This table lists the lawsuits for which hearings have been scheduled, or that Microsoft believes are likely to be scheduled soon if the cases aren’t dismissed.

Plaintiff	First Filed	Next Hearing or Trial Date	Area of Patent	Microsoft Products or Technologies Involved	More Information
Burst.com	June 2002	Consolidated with private antitrust suits; trial underway	Delivering digital media over a network	Windows Media 9 Series (included in Windows Server 2003)	burst.burst.com/new/newsevents/legalactivity.htm
Eolas and University of California	Feb. 1999	July 2003	The ability for browsers to read embedded interactive objects in a “hypermedia” environment (e.g., Web page)	Internet Explorer, ActiveX	www.eolas.com/zmapress.htm

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