Jonathan Lamberson

Partner, Silicon Valley



Jonathan Lamberson is a partner in the Global Intellectual Property Group based in the Firm's Silicon Valley office. As a trial attorney, Jon has attended over a dozen patent jury trials in districts around the country, including as lead trial counsel for Microsoft in Microsoft v. Corel, where a jury in the Northern District of California returned a verdict that Corel had wilfully infringed six Microsoft patents.

Jon is also a firm expert on fair, reasonable and non-discriminatory ("FRAND" or "RAND") damages. Jon led the damages team in the Huawei v. T-Mobile litigation, which involved the assertion of twelve standards-essential patents relating to LTE technology. Jon is familiar with the practices of standards bodies including the Institute of Electrical and Electronics Engineers ("IEEE") and the European Telecommunications Standards Institute ("ETSI").

Jon also has a significant appellate practice. Jon has participated in several appeals and has argued before the Federal Circuit and Ninth Circuit. Jon worked on the appeals in Williamson v. Citrix, where the Federal Circuit went en banc to significantly change the law for means-plus-function claiming.

Jon has a significant post-grant practice as well. He is a member of the USPTO patent bar and has participated in multiple inter-partes review ("IPR") proceedings, arguing before the Patent Trial and Appeal Board (PTAB).

Finally, Jon has participated in a number of meaningful pro bono cases in areas including constitutional rights, discrimination, class action, and immigration matters. One of Jon’s pro bono cases was named a Top 100 Settlement in California in 2017 by In another matter, Jon was able to obtain asylum for a five-year-old unaccompanied minor from El Salvador who fled violence and persecution in his home country.

Bars and Courts
District of Columbia
US District Court for the Central District of California
US District Court for the Northern District of California
US District Court for the Eastern District of Texas
US Patent and Trademark Office
US Supreme Court
Harvard Law School
Computer Engineering
University of Michigan


Patent Jury Trials

  • Microsoft Corp. v. Corel Corp. & Corel Inc. (N.D. Cal. 2018)
  • Power Integrations, Inc. v. Fairchild Semiconductor Corp. (N.D. Cal. 2014, D. Del. 2006 & 2007)
  • Warsaw Orthopedic Inc. v. NuVasive Inc. (S.D. Cal. 2011)
  • Broadcom Corp. v. Emulex Corp. (C.D. Cal. 2011)
  • Lucent Technologies Inc. and Multimedia Patent Trust v. Microsoft Corp. (S.D. Cal. 2008)
  • NICE Systems, Inc. and NICE Systems, LTD v. Witness Systems, Inc. (D. Del. 2008)
  • Callaway Golf Co. v. Acushnet Co. (D. Del. 2007 & 2010)
  • Padcom, Inc. v. Netmotion Wireless, Inc. (D. Del. 2006)


  • .Media Rights Technologies, Inc. v. Microsoft Corp., No. 17-16509 (9th Cir. 2018)
  • Williamson v. Citrix Online, LLC, No. 13-1130 (Fed. Cir. 2014, 2015, 2017)
  • IPLearn-Focus, LLC v. Microsoft Corp., No. 15-1863 (Fed. Cir. 2016)

ITC Investigations

  • In the Matter of Certain Electronic Devices, Including Wireless Communication Devices, Computers, Tablet Computers, Digital Media Players, and Cameras, ITC Investigation No. 337-TA-952
  • In the Matter of Certain Semiconductor Integrated Circuits Using Tungsten Metallization and Products Containing Same, ITC Investigation No. 337-TA-648

Inter Partes Reviews

  • Adobe Inc. v. Realtime Adaptive Streaming, IPR2019-00712
  • Microsoft Corp. v. IPLearn-Focus, LLL, IPR2015-00095, -00096, & -00097
  • Microsoft Corp. v. Corel Software, LLC, IPR2016-01083, - 01084,-01085, -01086 & -0130
Awards and Recognition

IAM Patent 1000 - 2019