Post-Grant Proceedings

/Overview

Nixon Peabody’s Intellectual Property practice group regularly handles post-grant proceedings before the US Patent and Trademark Office’s Patent Trial and Appeal Board (PTAB), including inter partes review (IPR), post-grant review (PGR), and ex parte reexamination proceedings.

Our team of attorneys, patent agents, and technical specialists offers deep experience across a wide breadth of industries and technologies—informing our offensive and defensive strategies surrounding validity.

Our patent litigators and patent prosecutors have been involved in more than 200 post-grant review proceedings and handle these matters in an efficient, cost-effective manner that aligns with the evolving needs of our clients.

/Representative experience

• Workspot, Inc.: Represented the enterprise software provider in several IPRs relating to remote application access using virtual machine technology.
• Solmetex, LLC: Defended the dentistry water solutions provider in a post-grant review petition filed by Dental Recycling North America (DRNA), persuading the PTAB to deny DRNA’s petition at the institution stage.
• G.W. Aru, LLC: Successfully represented a provider of technologies and services for the petroleum refining and petrochemical industries in securing the denial of an IPR proceeding related to its patent for CO to CO₂ combustion promoters.
• MemoryWeb, LLC: Representing the photo management technology company in multiple IPRs and PGRs filed by Apple, Samsung, and Unified Patents.
• OneD Material LLC: Successfully invalidated multiple patent claims in an IPR targeting the developer of advanced lithium-ion batteries.
• Ramot at Tel Aviv University: Representing the university’s technology transfer company in multiple ex parte reexaminations filed by Cisco Systems.

/Recognition

• Nixon Peabody has been named a Tier 1 National firm for Litigation - Intellectual Property and Patent Law in the 2025 edition of Best Law Firms®.
• Co-Lead of Nixon Peabody's Post-Grant Proceedings team, Jennifer Hayes, is listed by the PTAB Bar Association as one of the Top 50 Women in PTAB Trials, which recognizes female practitioners in private practice or at companies who have appeared in the highest number of PTAB trial proceedings (2012, 2019, and 2025)