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JunHe Assists Simcere Zaiming in Reaching Over $1 Billion ADC Licensing Deal with Ipsen

2025.12.25

On December 22, 2025, Simcere Zaiming announced that it has entered into an exclusive global licensing agreement, excluding Greater China, with French company Ipsen for an antibody-drug conjugate (ADC) SIM0613, which has the potential to be best-in-class.


SIM0613 targets the LRRC15 protein and can efficiently penetrate various solid tumors, offering potential treatment for certain solid tumors with urgent clinical needs.


Under the terms of the agreement, Simcere Zaiming could receive up to $1.06 billion in total transaction payments, including upfront payments, development, regulatory, and commercial milestone payments. Additionally, tiered royalties can be earned.


JunHe was entrusted by Simcere Zaiming to review, amend, and negotiate the agreement for this project. Throughout the project, JunHe earned the trust and recognition of its client through its consistently efficient, rigorous work style and meticulous, dedicated service attitude.


The lead partner for this project was lawyer ZHAO, Hao (Gerry).

JunHe is the only Chinese law firm to be admitted as a member of Lex Mundi and Multilaw, two international networks of independent law firms. JunHe and selected top law firms in major European and Asian jurisdictions are “best friends.” Through these connections, we provide high quality legal services to clients doing business throughout the world.
As the first carbon neutrality fund sponsored by a law firm in China, the BAF Carbon Neutrality Special Fund was jointly established by JunHe and the Beijing Afforestation Foundation (BAF) to promote carbon neutral initiatives, and encourage social collaboration based on the public fundraising platform to mobilize engagement in public welfare campaigns.