Question · Q4 2025
Simon Baker inquired about the overarching principles guiding the rationalization of Sanofi's phase two portfolio and sought clarification on Dupixent's patent protection strategy and potential loss of exclusivity beyond the main patent expiry in March 2031.
Answer
Houman Ashrafian, EVP and Head of Research and Development, explained that the portfolio rationalization is guided by a dynamic capital allocation strategy, ensuring resources are spent on programs with established value. Roy Papatheodorou, General Counsel, stated that Dupixent is expected to be protected by multiple patents beyond March 2031, ranging to 2035, and the company intends to vigorously defend its strong patent portfolio.
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