Complaint filed by 3M Company against Kerr Corporation

On December 1, 2017, 3M Company and 3M Innovative Properties Company (“Plaintiffs”) filed a complaint against Kerr Corporation (“Defendant”) asserting infringement of U.S. Patent No. 6,572,693 (“the ‘693 Patent”).  The ‘693 Patent is assigned to the Plaintiffs and is drawn to a dental material containing a hardenable resin and a filler comprising clusters of nano-sized particles.  The Plaintiffs are asserting that the Defendant is infringing the asserted patent by making, using, selling, and/or offering to sell dental restorative products, including the Defendant’s SonicFill 2 Composite and Harmonize Universal Composite products.  The case remains pending and is captioned 1-17-cv-01730.

By:  Jacqueline A. DiRamio

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