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US patent practice: most common mistakes when drafting patent claims – and how to fix them

Are you preparing to file a patent application in the US, or are you submitting a revised set of patent claims? There are common errors that foreign practitioners make when drafting or amending claims for the US.

Please join us for a live and interactive webinar on common mistakes made when drafting US patent claims, and the best tools for fixing those mistakes after a patent has been granted. We will also discuss strategies to select the best tool for different types of correction and tips to maximise results.

Central topics:  

  • Top US claims drafting mistakes
  • Recent case law illustrating how such errors can impact enforceability and value, and the lessons learned
  • Correcting patents through certificate of correction, reissue, reexamination, and supplemental examination
  • Reasons patent owners may want to correct a US patent and the mechanisms available for doing so

For whom?

This course is for patent attorneys, in-house patent and general counsels, chief technology officers, technology and other IP professionals dealing with patent applications in the US.


Timothy May

Timothy May is a partner in Finnegan LLP's Washington, DC office.He has more than 20 years' experience in the field of U.S. patent law, practicing patent litigation and counselling clients on IP management matters. His practice encompasses a range of technical areas, including software, medical devices, industrial equipment, semiconductor devices, and electronics.

Tim has managed patent litigation activities for overseas clients, and led litigation teams through nearly all phases of litigation, including, worldwide discovery efforts, depositions, claim construction, motion practice; as well as settlement hearings and negotiations. He has also been involved in more than 40 re-examination and post-grant proceedings before the USPTO.

Tim was a resident partner in the firm’s European office for five years. While in Europe, he gained substantial experience advising European high-tech companies on US patent matters. Tim currently manages the US prosecution and global patent portfolios for European clients in various electrical and mechanical technologies. He lectures frequently on US patent law, and has spoken at numerous conferences in Europe.

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Course Team

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