Biography
Christopher L. North focuses his practice on contested cases before the Patent trial and Appeal Board, patent prosecution and patent appeals in the United States Patent and Trademark Office. Christopher has served as counsel in numerous interference and inter-parte review (IPR) proceedings before the Patent Trial and Appeal Board in the United States Patent and Trademark Office.
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Motions to Exclude Expert Testimony Before the PTAB Are Rarely Successful: Make Your Arguments in Substantive Responses and Replies
It is common for both petitioners and patent owners to present expert opinion testimony in post-grant proceedings before the Patent…
Challenges in Amending Claims in an IPR: The Evolving Burden on a Patent Owner
Amending claims during an inter partes review (IPR) proceeding is not like amending claims during ex parte prosecution or a…