K&L Gates, with top patent prosecution and litigation practices, is uniquely positioned to handle all aspects of patent office litigation.

Our 100 registered patent lawyers and agents and 80 patent litigators possess the requisite technical and trial experience to effectively represent clients in both the newly established and traditional proceedings at the U.S. Patent Office and abroad, including:

  • Inter partes review
  • Post-grant review
  • Covered business methods
  • Ex parte reexamination
  • Derivation (and interference)
  • Non-US patent opposition and nullity

Over the last several decades, the trend among law firms has been to choose between prosecution and litigation, but very few do both. K&L Gates’ practice was built to leverage the benefits of a combined prosecution-based and litigation-based practice to benefit from the numerous intersections of both areas of experience.

The Leahy-Smith America Invents Act (AIA) solidifies the importance of patent office litigation as part of a comprehensive intellectual property strategy. K&L Gates has over 100 registered patent attorneys and agents, many with substantial trial experience, ready to assist in the trial proceedings created by the AIA.

Our attorneys have also prepared countless requests that were never filed, but were instead used as part of a comprehensive litigation strategy to achieve favorable results for our clients.

K&L Gates also understands worldwide intellectual property laws and procedures. For example, our attorneys understand the interplay and differences between a U.S. reexamination proceeding and an EPO opposition, and can anticipate the intricacies involved in simultaneous proceedings in these forums. Our global platform provides an integrated solution to protect and defend intellectual property worldwide.