Case Number:

IPR2022-01107

Case Type:

IPR

Status:

Final Written Decision

Petitioner:

AMCOL International Corporation et al.

Patent Owner:

Tech Center:

1. Filed: June 07, 2022 00:00

   Coverage

   1. December 01, 2023

      PTAB Scratches Out Some Oil-Dri Kitty Litter Patent Claims

      Some of mineral company Oil-Dri Corp. of America's patent claims for "clumpable" cat litter were invalid as anticipated or obvious, the Patent Trial and Appeal Board has ruled.

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