Honjo, Ono Remain At Loggerheads As Opdivo Dispute Simmers

PD-1 discoverer and the Japanese co-developer of Opdivo remain locked in simmering dispute over patent royalties, with a revised one-off settlement or legal action emerging as possible near-term options.  

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Simmering Royalty Dispute For IO Pioneer Opdivo • Source: Shutterstock

The Japanese academic discoverer of the PD-1 protein and the company that co-developed a blockbuster drug based on his work continue to be embroiled in a spat over patent royalties, with the protracted dispute seemingly coming to a head.

Tasuku Honjo, a distinguished professor at Kyoto University in Japan and Nobel Prize winner, is now said to be considering...

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