Anthony Sotelo, Amanda Antons and Katherine Helm, attorneys at Dechert, delve into the immense role that expert witness testimony plays in initial responses to inter partes review (IPR) petitions within the context of the U.S Patent Trial and Appeal Board procedures. The investigation spans a period of six years and seeks to illustrate the impacts of overturning presumption in favor of the petitioner when considering pre-institution testimonial proof. This shift in convention has particular implications on the value of expert witness accounts included in preliminary replies to IPR petitions.
Within the existing procedural timeline of the Patent Trial and Appeal Board, a clock begins ticking once an IPR has been petitioned against your patent. It is in this crucial juncture where the expertise of IPR veterans and their preceding accounts turn pivotal in influencing the legal narrative. By analyzing this period, the attorneys consider whether there has been a meaningful change in the efficacy of expert testimonies, following the legal pivot on the presumption favoring the petitioner.
For a comprehensive consideration of this pressing issue, further details can be accessed here.