The lawsuit, filed on Friday in the U.S. District Court for the Western District of Wisconsin, alleges that the Listerine strips infringe P&G patents related to the tooth whitening active ingredient and delivery systems.
P&G has asked the court to stop J&J and its company, McNeil-PPC, from making, selling, and importing allegedly infringing products. P&G also is seeking recovery of damages.
P&G introduced Crest Whitestrips in 2000.
A spokeswoman for J&J declined to comment on pending litigation.
Reporting by Lisa Baertlein, editing by Richard Chang
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