Todd M. Siegel


Portland Office



Todd practices in all aspects of intellectual property law, with an emphasis on patent litigation and post-grant challenges before the Patent Trial and Appeal Board (PTAB). He previously chaired Klarquist’s litigation department and led Klarquist’s post-grant practice group, which represents both patent owners and patent challengers in inter partes reviews (IPR), covered business method (CBM) reviews, and reexamination proceedings. Todd is an active member of the PTAB Bar Association and a frequent contributor to the Association’s PTAB Round-up.

Todd’s expertise spans a wide range of technologies, with substantial experience in mechanical, software, operating system, and internet technologies. Before law school, he worked as an information systems consultant for Andersen Consulting, now known as Accenture.

With extensive experience litigating intellectual property matters, Todd has a deep understanding of the legal and technical issue his clients face. He takes pride in delivering efficient and practical solutions to his clients.

Todd joined Klarquist as a lateral associate in 2000, became partner in 2007, and has served as the firm’s managing partner twice.

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Honors & Awards
Representative Cases