Novartis is investigating Celltrion for patent infringement of its biosimilar Xolair, asthma, and urticaria treatment. According to the pharmaceutical industry on the 2nd, Novartis filed two claims against Celltrion on the 1st. A proactive trial to confirm the scope of rights is to ask the Intellectual Property Trial and Appeals Board to accurately determine the scope of patent validity to see if the patent holder has been infringed. This case is interpreted as a situation in which Novartis is claiming Celltrion's patent infringement. In other words, Celltrion is claiming that the Xolair biosimilar, which is being developed, has infringed on two pharmaceutical patents it owns.

Xolaire's material patent