Nike Inc. is suing Lululemon Athletica, claiming that at least four of Lululemon’s footwear products infringe its patents. In a complaint filed in Manhattan federal court, Nike alleges that Lululemon’s Blissfeel, Chargefeel Low, Chargefeel Mid and Strongfeel sneakers infringe on Nike’s patents related to its Flyknit technology, with reference to ...