About Liz

Elizabeth Stameshkin litigates cases from inception to trial across the country, with an emphasis on high-stakes patent infringement and other technology-focused legal disputes.  Liz has handled cases across a variety of technical disciplines, including virtual reality hardware and software, social networking, Internet advertising, video games, digital photography, telecommunications, and food science. She has also litigated cases and counseled clients on trade secret, inventorship, trademark, copyright, false advertising and contract issues.

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Experience

  • Trial win for Facebook in patent case targeting “Like” button

    • Trial win for Facebook in patent case targeting “Like” button

    July 27, 2016

    Cooley defended Facebook in a patent infringement suit that targeted one of Facebook's most prominent features – the "Like" button. Rembrandt Social Media filed the case in the Eastern District of Virginia, accusing Facebook of willfully infringing two patents covering social media.

    Originally, Rembrandt accused Facebook of willfully infringing two patents but we convinced the court to dismiss willful and indirect patent infringement claims early in the case. We also persuaded the judge to exclude the testimony of two Rembrandt expert witnesses, including, significantly, an expert tasked with calculating damages. As a result of this ruling, Rembrandt filed an appeal with the Federal Circuit, which was denied, and the case proceeded to trial.

    In June 2014, following a five day trial, Cooley secured a complete defense verdict - the jury issued a ruling of non-infringement and also invalidated the two patents. To date, Facebook has had only two patent jury trials, both of which Cooley has resolved successfully.

    Related contacts

    Heidi Keefe
    Partner, Palo Alto
    Mark Weinstein
    Partner, Palo Alto
    Phillip Morton
    Partner, Washington, DC
    Liz Stameshkin
    Special Counsel, Palo Alto
    Andrew Mace
    Special Counsel, Palo Alto
    Dane Voris
    Special Counsel, Boston

    Related Practices & Industries

    Digital Media and Entertainment
    Intellectual Property
    Intellectual Property Litigation
    Internet and Social Media
    Software
    Trials

  • Federal Circuit affirms patent cancellation in Facebook’s first-ever patent case

    • Federal Circuit affirms patent cancellation in Facebook’s first-ever patent case

    March 3, 2015

    When Facebook was first sued for patent infringement over eight years ago, the young company turned to Cooley.

    The case was filed in the Eastern District of Pennsylvania by venture capital firm, Cross Atlantic Capital Partners (XACP) just one year after Facebook expanded its site from Harvard University to the general public. XACP claimed that its "online community" patent covered a wide variety of key Facebook features. XACP was seeking royalties, a permanent injunction against Facebook, and attorneys' fees.

    Cooley guided the company through seven years of hotly contested litigation across multiple forums. Just a few weeks before trial, Facebook asked the Patent Office to invalidate the patent based on several systems and books that predated the patent, and convinced the district court to stay the case pending the Patent Office's decision.

    The Patent Office initially found the claims valid. Facebook appealed to the Board of Patent Appeals (BPAI) and the BPAI judges ruled that the Examiner was wrong, and that the patent claims were invalid. XACP appealed and, in 2014, the Federal Circuit affirmed the invalidity of all claims of the patent.

    Related contacts

    Heidi Keefe
    Partner, Palo Alto
    Mark Weinstein
    Partner, Palo Alto
    Lowell Mead
    Partner, Palo Alto
    Liz Stameshkin
    Special Counsel, Palo Alto

    Related Practices & Industries

    Digital Media and Entertainment
    Intellectual Property
    Intellectual Property Litigation
    Internet and Social Media
    Patent Office Litigation
    Software

Admissions and credentials

  • California

Rankings and accolades

  • Managing Intellectual Property: Rising Star (2019, 2020)

Memberships and affiliations

  • American Bar Association (ABA)

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