Knauf Insulation Limited sues CertainTeed Corporation for patent infringement of fiberglass insulation products


Indianapolis, IN – Patent lawyers for Knauf Insulation Limited of the United Kingdom has filed a patent infringement suit alleging CertainTeed Corporation of Valley Forge, Pennsylvania infringed Patent No. 7,854,980, FORMALDEHYDE-FREE MINERAL FIBRE INSULATION PRODUCT, which has been issued by the US Patent Office. Knauf Insulation USA is based in Shelbyville, Indiana where it employs 500 workers.

Knauf’s patent attorneys allege that CertainTeed makes and offers for sale a product known as “CertainTeed Sustainable Insulation” that infringers at least one of the claims of Knauf’s patent. According to coverage by the Indianapolis Star, Knauf’s patented technology allows it to make insulation with using formaldehyde. Knauf is seeking a declaratory judgment that CertainTeed has infringed the patent, injunction, damages and attorneys’ fees. According to Inside Indiana Business, CertainTeed has responded by publicly denying the allegations.

This case has been assigned to Judge Tanya Walton Pratt and Magistrate Judge Debra McVicker Lynch in the Southern District of Indiana, and assigned case no. 1:11-cv-00300-TWP-DML.

Complaint – Knauf v. Certain Teed

Further information on this case is as follows:

Filed: February 28, 2011 as 1:2011cv00300 Updated: February 28, 2011 20:32:25



Presiding Judge: Tanya Walton Pratt

Referring Judge: Debra McVicker Lynch

Cause Of Action: Patent Infringement

Court: Seventh Circuit > Indiana > Southern District Court

Type: Intellectual Property > Patent

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