Case Number:

IPR2021-00192

Case Type:

IPR

Status:

Final Written Decision

Petitioner:

GAF Materials LLC

Patent Owner:

Kirsch Research and Development, LLC

Tech Center:

2100

1. Filed: November 10, 2020 00:00

   Coverage

   1. March 22, 2022

      PTAB Munches On 'Grilled Cheese' Analogy In Roofing IP Suit

      An attorney for Kirsch Research and Development compared its roofing underlayment patent to a classic American sandwich Tuesday in an effort to persuade the Patent Trial and Appeal Board that rival GAF Materials LLC's challenge to the patent lacks merit.

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