P&G Crest Whitestrips Patents Stand Up To ‘Indefiniteness’ Challenge

P&G prevails in U.S. district court arguing that three private-label tooth-whitening-strip firms infringed three of its patents for Crest Whitestrips. The defendants plan to appeal the ruling against their motion that two of P&G’s patents are invalid.

Procter & Gamble Co. scores another win in protecting Crest Whitestrips intellectual property with a federal court ruling against firms making and marketing private-label tooth whitening strips that P&G alleges infringe three of its patents.

In one of a series of rulings in U.S. District Court for the Southern District of Ohio, Judge Timothy Black...

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