Making Changes: (Negative) Impact of Rewriting the Provisional Specification
Patent – Patently-O 2024-12-09
Summary:
by Dennis Crouch
Patent attorneys know that amending the specification can directly impact claim interpretation. The Federal Circuit in Phillips v. AWH Corp. placed the specification alongside claim language as foundational intrinsic evidence for claim construction, recognizing that the specification provides focused context for understanding claim terms as they would be understood by skilled artisans. 415 F.3d 1303 (Fed. Cir. 2005). Amendments made during prosecution carry particular weight because they represent deliberate choices by the applicant to alter a known baseline. Although practitioners don't always think of it this way, one of the most significant opportunities for "amending" patent disclosure comes when moving from a parent to a child application. This transition - particularly when moving from a provisional to a non-provisional application - often serves as a natural inflection point where attorneys engage in cleanup, clarification, and refinement. But as recent Federal Circuit decisions make clear, these often routine editorial choices between applications can have profound implications for claim scope, even without rising to the level of formal prosecution disclaimer.
The case prompting this post is the DDR Holdings, LLC v. Priceline.com LLC, No. 2023-1176 (Fed. Cir.