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  • Generic companies seek early entry into KRW 100 bil Tagrisso
  • by Kim, Jin-Gu | translator Alice Kang | Nov 12, 2024 05:51am
Expands patent challenges
Following Chong Kun Dang, Kwangdong Pharmaceutical filed a claim to avoid Tagrisso¡¯s product patent
Patent challenges to Tagrisso (osimertinib), a non-small cell lung cancer treatment that posts annual sales of KRW 110 billion, are expanding. 

The companies that have filed patent challenges seek to first evade the product patent, which expires in 2035, and then launch generics early after November 2033, when the substance patent expires. 

According to the pharmaceutical industry on the 11th, Kwangdong Pharmaceutical recently filed a passive trial on the scope of rights against AstraZeneca for the Tagrisso formulation patent (10-2336378). 

The patent expires in January 2035. In addition to the formulation patent, Tagrisso has two other patents listed on the MFDS Green List. They are the produ
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