Patent Trial and Appeal Board (PTAB) Proceedings

Strategic Advocacy Before the Patent Trial and Appeal Board

The PTAB Handbook by William Atkins, founding partner of Cushman Law and authority on Patent Trial and Appeal Board proceedings.

Strategic Representation Before the Patent Trial and Appeal Board

Proceedings before the Patent Trial and Appeal Board (PTAB) have become a central battleground for resolving patent validity disputes. Inter partes reviews (IPRs), post-grant reviews (PGRs), and other post-grant proceedings often run in parallel with district court litigation—and can decisively shape the outcome of infringement disputes, licensing negotiations, and portfolio value.

Our firm represents patent owners and challengers in all phases of PTAB practice, combining deep procedural knowledge with a litigation-driven strategic approach. We do not treat PTAB proceedings as isolated administrative matters; instead, we integrate them into an overall enforcement or defense strategy aligned with our clients’ business objectives.

A PTAB-Focused Practice, Led by Recognized Authority

Founding partner William Atkins is the editor-in-chief of The PTAB Handbook, a leading treatise relied upon by practitioners and courts for authoritative guidance on PTAB law, procedure, and strategy. That perspective informs every PTAB matter we handle—from institution strategy through final written decision and appeal. 

Our team brings decades of experience representing clients in high-stakes post-grant proceedings involving complex technologies, including life sciences, software, electronics, and advanced mechanical systems.

Our PTAB Services

Inter Partes Reviews (IPRs)

We represent both petitioners and patent owners in IPRs, focusing on:

  • Institution strategy and opposition

  • Claim construction and prior art development

  • Expert coordination and technical briefing

  • Oral hearings before the Board

  • Parallel district court coordination and stays

Post-Grant Reviews (PGRs)

For newly issued patents, we handle PGRs involving a broader range of challenges, including:

  • Section 101 and 112 defenses
  • Written description and enablement
  • Anticipation and obviousness

Appeals to the Federal Circuit

PTAB decisions often do not end at the Board. We regularly handle appeals to the U.S. Court of Appeals for the Federal Circuit, preserving key issues for review and integrating appellate strategy from the outset of the PTAB proceeding.

Why Clients Choose Us for PTAB Matters

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  1. Authoritative Insight

    Leadership drawn from hands-on involvement in shaping PTAB practice and jurisprudence.

  2. Trial-Tested Strategy

    PTAB arguments developed with an eye toward litigation, appeal, and settlement leverage.

  3. Technical Depth

    Experience across a wide range of sophisticated technologies.

  4. Business-Focused Results

    Clear, pragmatic advice grounded in clients’ commercial realities.

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Talk With a PTAB Team That Shapes the Practice

Whether you are considering a post-grant challenge, defending a critical patent, or coordinating PTAB proceedings with active litigation, we offer seasoned guidance at every stage. Contact us to discuss how a carefully planned PTAB strategy can protect—or redefine—the value of your intellectual property.