Written Description Compliance Requires Lack of Different Inventions Achieved by Claimed and Disclosed Ranges

Apr 19, 2024 RAI STRATEGIC HOLDINGS, INC. v. PHILIP MORRIS PRODUCTS S.A Decided: February 9, 2024 Chen, Stoll, and Cunningham.  Opinion by Stoll. Summary The CAFC addressed a question of written description compliance where a numerical range set forth in a patent claim is narrower than and encompassed by a disclosed range in the specification. The CAFC found […] READ MORE