An arbitrator issued a decision today in a dispute between Daiichi Sankyo Company and Seagen denying all claims made by Seagen.

Specifically, Daiichi Sankyo retains all patent rights to its antibody drug conjugate (ADC) technology and will continue to develop and commercialize these medicines as planned.

In November 2019, Daiichi Sankyo filed a Declaratory Judgment action in the District Court of Delaware against Seagen in response to communications from Seagen claiming certain intellectual property rights related to Daiichi Sankyo’s ADC technology. Seagen’s claims related to a collaboration agreement between the two companies from 2008 to 2015. In response, Seagen filed an arbitration demand in connection with the dispute with the American Arbitration Association in the same month, resulting in an arbitration and today’s decision.

“We are extremely pleased that, based on the facts of this matter, the arbitrator recognized that Daiichi Sankyo retains ownership of all patents at issue in the arbitration and that our platform ADC technology was developed by Daiichi Sankyo,” said Sunao Manabe, President and CEO of Daiichi Sankyo, Company, Ltd.

“Daiichi Sankyo is proud of our legacy and strength in innovative science and technology and remains committed to bringing our ADCs to patients who need new standards of care in cancer treatment.”