PHARMA JAPAN welcomes JETRO New York’s Shunsuke Tani as a guest columnist. In occasional contributions, Tani will share his perspectives on US pharmaceutical policy, industry developments, and life in America, drawing on his firsthand experience in the US.---Hello from New…
BUSINESS
Daiichi Sankyo Wins ADC Patent Row against Seagen, Appeals Unfavorable Ruling in Enhertu Suit
Daiichi Sankyo said on November 20 that a US arbitrator handed down a final decision in its dispute with Seagen over its antibody drug conjugate (ADC) technology, ordering the US firm to pay about US$45.5 million to cover part of…
To read the full story
Related Article
- Seagen ADC Patent Dispute Ends with Daiichi Sankyo Victory
March 11, 2026
- Daiichi Sankyo Wins US Appeal in Seagen ADC Patent Dispute
December 4, 2025
- Daiichi Sankyo’s ADC Arbitration Win Finalized with No Appeal
July 1, 2024
- US Patent Office Nixes Seagen Patent in ADC Row: Daiichi Sankyo
January 18, 2024
- Daiichi Sankyo Ordered to Pay 8% Royalty to Seagen in ADC Patent Row
October 19, 2023
- US Patent Office Restarts PGR for Seagen Patent: Daiichi Sankyo
February 20, 2023
- US Arbitrator Rejects Seagen’s Claims against Daiichi Sankyo in ADC Feud
August 16, 2022
- Texas Court Favors Seagen in Enhertu Patent Row, Daiichi Sankyo Poised to Challenge Ruling
July 21, 2022
- Jury Finds Enhertu Infringes Seagen Patent, Awards US$41.8 Million in Damages
April 12, 2022
BUSINESS
- Japan Pharma Earnings Season Opens as Drug Price Cuts, Patent Cliffs Test Growth
October 27, 2026
- Wholesalers See NHI-Market Price Gap Falling Below 4.8% to New Record Low
October 26, 2026
- Vyepti Could Expand Migraine Treatment Options: Japanese Expert
October 26, 2026
- Zeria to Buy German Asacol Manufacturing Partner
October 26, 2026
- Otsuka’s IgAN Drug Voyxact Cuts Kidney Event Risk by 97%
October 26, 2026





