An Am Law 200 firm will continue representing international sporting goods company PUMA in the latest matter in a series of patent disputes with an industry competitor.

On Monday, Jonathan Labukas, a partner with Quarles and Brady in Washington, D.C., filed an appearance for the German-based footwear company in a declaratory action filed by Brooks Sports in the U.S. District Court for the Eastern District of Virginia. Attorneys with Finnegan, Henderson, Farabow, Garrett & Dunner filed the suit in September, asking the court to weigh in as Puma has allegedly threatened to bring additional patent litigation against Brooks over its Glycerin 21 line of running shoes.