Inter Partes Review
Heim, Payne & Chorush is one of the country’s busiest and top-performing firms before the U.S. Patent and Trademark Office’s Patent Trial and Appeal Board. Our patent litigators have handled hundreds of PTAB matters, including winning one of the first inter partes review (IPR) proceedings on behalf of a patent owner in U.S. history.
IPR challenges have had a seismic impact on patent infringement lawsuits by giving defendants additional avenues to challenge patent validity, often delaying or avoiding district court trials. Heim, Payne & Chorush has successfully navigated IPRs for patent holders and accused infringers since the PTAB was launched in 2012.
Our experienced IPR professionals develop effective, coordinated strategies that align with underlying federal court litigation to provide maximum impact. This includes addressing prior art, drafting petitions and responses, managing expert witnesses, amending claims, conducting depositions, presenting evidence during oral hearings, negotiating settlements, and pursuing appeals from USPTO decisions.
The PTAB Intelligence Report, published by the respected intellectual property research firm Patexia Inc., consistently ranks Heim, Payne & Chorush among the nation’s leaders in IPR, most recently as one of the Top 10 Performing Law Firms and Top 25 Most Active Law Firms before the PTAB from 2020 to 2025.
The following matters represent the firm’s latest IPR matters and provide a clear example of our expertise in these cases. Contact us for more information about how we can help you navigate your next IPR.