Klaus H. Hamm

Klaus H. Hamm is a Partner at Klarquist Sparkman, specializing in a broad array of intellectual property litigation. His practice encompasses patent, trade secret, copyright, trademark, and licensing disputes. He has extensive experience across numerous technologies, including software, hardware, e-commerce, semiconductors, mechanical engineering, and pharmaceuticals.

Mr. Hamm primarily represents defendants, including major technology companies and startups, in federal courts nationwide, particularly along the West Coast, in Texas, and in Delaware. His single tracked appearance, representing Microsoft Corp. as of counsel in Walker Digital, LLC v. Microsoft Corp. et al., aligns with this defense-oriented practice. In that case, Microsoft successfully moved to strike untimely infringement theories at the district court level, and the Federal Circuit later found non-infringement for Microsoft even under a modified claim construction. He has also contributed to significant legal discourse by filing amici curiae briefs in prominent cases such as TC Heartland LLC v. Kraft Foods Group Brands, LLC and U.S. v. Microsoft Corporation.

While Mr. Hamm's personal profile does not detail specific IPR/PGR proceedings, his firm, Klarquist Sparkman, is active in post-grant USPTO proceedings, offering services in this area and securing notable wins before the Patent Trial and Appeal Board (PTAB).

Mr. Hamm earned his J.D., cum laude, from Harvard Law School in 2001, and a B.A., cum laude, in American Studies from Carleton College in 1995. He is admitted to practice in Oregon (2009) and California (2003). Prior to joining Klarquist in 2008, he was an associate at Keker & Van Nest LLP.