Fish is the most active firm at the Patent Trial and Appeal Board, representing clients as both petitioner and patent owner in post-grant proceedings across a wide range of industries.


Register for our next webinar: Post-Grant for Practitioners: Choosing Whether to Challenge a Patent at the PTAB – Has Shaw Watered Down Petitioner Estoppel?

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Latest Alert: Pfizer Takes Aim at Herceptin® Patent at the PTAB

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Meet our post-grant team, and learn more about our experience with proceedings at the USPTO.

Meet Team

Post-Grant Radio

A series of podcasts dedicated to the discussion of developments in post-grant proceedings.

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Fish & Richardson Named #1 PTAB Law Firm in the U.S. for 2016 by Managing Intellectual Property Magazine

Fish & Richardson Named 2016’s Top Firm in the PTAB

Fish & Richardson Tops List of Busiest Firms at Patent Trial and Appeal Board

Fish & Richardson Sweeps 2015 Best Law Firms “National Tier 1” IP Rankings; Named “Patent Litigation Law Firm of the Year”

Featured Team Members

Principal, Co-Chair I Twin Cities

Dorothy Whelan

Ms. Whelan was the first woman to serve on the firm’s Management Committee.

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Principal, Co-Chair | Washington DC

Karl Renner

Mr. Renner has provided direction for over 300 AIA post grant matters.

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Principal | Dallas

Josh Griswold

Josh Griswold is a Principal in the Dallas office of Fish & Richardson P.C. His practice...

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Principal | Washington DC

Thomas Rozylowicz

Thomas Rozylowicz is a Principal in the Washington, DC*, office of Fish & Richardson…

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