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  • CKD and Kwang Dong win Tagrisso formulation patent suit
  • by Kim, Jin-Gu | translator Alice Kang | Sep 26, 2025 06:14am
Green light lit for its early launch
Product launch possible after Tagrisso¡¯s 2033 substance patent expiry
Generic drugmakers challenging AstraZeneca's patent for the non-small cell lung cancer treatment ¡®Tagrisso (osimertinib)¡¯ have won their case in the first instance.

According to industry sources on the 25th, the Intellectual Property Trial and Appeal Board (IPTAB) on the 24th ruled in favor of Chong Kun Dang and Kwang Donng Pharmaceutical in their request for a negative right scope confirmation trial regarding Tagrisso¡¯s formulation patent (No. 10-2336378).

This significantly increases the possibility of an early launch of Tagrisso generics. The two companies have also met 2 key requirements for obtaining exclusive marketing rights (first generic exclusivity): ¡ã being the first to file the trial request and
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