USPTO Trial Practice
Patent Post Grant Proceedings
The USPTO has a number of procedures in place to allow third parties to challenge the validity of patents. These proceedings are generally designed to be used as alternatives to, or in connection with, civil litigation. The Patent Trial and Appeal Board (PTAB) proceedings have limited discovery and...
Ex Parte Reexamination
Ex parte reexamination is a USPTO proceeding to challenge the validity of one or more claims of a patent. A request for ex parte reexamination can be filed at any time during the enforceability of a patent. A request for ex parte reexamination can be filed by either the patent owner or a third...
Derivation Proceedings
Occasionally multiple people file separate patent applications directed towards the same invention. Sometimes these multiple filings are an innocent coincidence; other times they are a sign of an attempt to patent someone else’s invention. A derivation proceeding can be instituted where there...
Trademark Trial and Appeal Board (TTAB) Proceedings
The Trademark Trial and Appeal Board (TTAB) is an administrative board of the United States Patent and Trademark Office that is empowered to determine whether a party has the right to register a particular trademark. The TTAB has two inter partes proceedings to challenge another person’s...

Our USPTO Trial Practice Attorneys

Joseph A. KromholzFounding Partner
Patrick J. FleisPartner
Mollie Ambrose NewcombAttorney