REUTERS - Medicis Pharmaceutical Corp said Genzyme Corp had sued it in a U.S. court over its wrinkle treatments, accusing Medicis of patent violation.

Medicis acquired exclusive U.S. and Canadian rights to the Restylane family of products through certain license agreements in March 2003 and it is covered by a U.S. patent that expires in 2015 or later, the dermatological product maker said in a regulatory filing.

The Restylane products are used to treat facial wrinkles and folds, including the area between the nose and upper lip.

Medicis' non-acne dermatological products, which include Restylane, accounted for 23 percent of the company's sales of $174 million in the June quarter.

The Scottsdale, Arizona-based company also said it amended its 2009 complaint against India's Lupin Ltd related to a copycat version of Medicis' acne treatment Solodyn, to include a newly issued patent.

The company's shares, which have gained 12 percent since the U.S. health regulator approved additional strengths of Solodyn tablets in August, closed at $30.18 Tuesday on the New York Stock Exchange.

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