New Theories Not Permitted In IPR Reply Brief, PTAB Litigation Blog

Visit the PTAB Litigation Blog.

In Henny Penny Corp. v. Frymaster L.L.C., No. IPR2016-01435, (P.T.A.B. Mar. 16, 2017), the petitioner (HPC) challenged certain claims of U.S. Patent No. 8,497,691, owned by HPC’s competitor, Frymaster. The ’691 patent relates to deep fryers, and is directed to a system for determining when cooking oil has become degraded and needs to be changed. The system does so by measuring and monitoring certain impurities in the oil called total polar materials (“TPMs”). When the TPM levels are too high, the system instructs the operator to change the oil in the fryer.

Read the full article at

Insights by Jones Day should not be construed as legal advice on any specific facts or circumstances. The contents are intended for general information purposes only and may not be quoted or referred to in any other publication or proceeding without the prior written consent of the Firm, to be given or withheld at our discretion. To request permission to reprint or reuse any of our Insights, please use our “Contact Us” form, which can be found on our website at This Insight is not intended to create, and neither publication nor receipt of it constitutes, an attorney-client relationship. The views set forth herein are the personal views of the authors and do not necessarily reflect those of the Firm.