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Post Grant Proceedings

First "PTAB Firm of the Year." First to handle 500+ AIA proceedings. Your first stop for handling litigation at the USPTO.

Sterne Kessler has industry-leading experience in all proceedings before the USPTO's Patent Trial and Appeal Board, including interferences, inter partes review (IPR), post grant review (PGR), covered business methods reviews (CBM), derivation proceedings, reexamination and opposition. The first "PTAB Firm of the Year" — we literally wrote the book on PTO litigation.

Most recently, Sterne Kessler was named Post-Grant Firm of the Year for the United States at the 2023 Global IP Awards by leading intellectual property publications Intellectual Asset Management and World Trademark Review. We also received top rankings in the Patexia 2023 PTAB Intelligence Report and are a top tier firm for PTAB litigation in Managing IP’s 2023 IP Stars guide.

A source says: "It is a powerhouse firm for when you want a deep understanding of the law.
     -Chambers USA 2020


Sterne Kessler’s interferences success stems from technology, law and experience in procedure - from pre-declaration activities to final hearings and appeals.

PTAB Trials

Sterne Kessler has one of the most experienced PTAB litigation teams in the country, representing petitioners and patent owners across all technologies.

Patent Oppositions

Sterne Kessler can help you avoid infringing competitors’ patents. Learn how we can represent you in opposition proceedings.

Reexamination and Supplemental Examination

Sterne Kessler is the leading law firm for reexaminations at the USPTO, having handled more than 500 reexaminations over the last several decades.


Sterne Kessler is the leading law firm for reissue having handled over 150 reissue matters in the last several decades.

PTAB Legal Experience and Advancement Program (LEAP)

Sterne Kessler proudly holds the top position for LEAP requests during the program’s first two years.

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