Provisional Patent Drafting for SEPs

A provisional patent application is a filing that secures an early priority date for an invention. It is not examined and it does not grant. Its value is the date: a later application on the same subject matter can claim priority from it, and the invention can be described as patent pending in the meantime. Applicants use the interval that follows to run a thorough prior art search, add features, talk to investors, or decide which markets justify a complete application.

A provisional secures the date sooner and asks less of you at the outset. It suits an invention that is still developing, because features added during the interval can be captured when the complete application is drafted. It also leaves room to run a thorough prior art search before the claims are settled, and it gives founders something concrete for a pitch deck. Where the invention is stable and the prior art is already known, drafting the complete application directly can make more sense.

Detailed enough to support whatever you later claim. A priority date only helps for subject matter the provisional actually describes, so a thin filing can leave the strongest features unsupported when the complete application is written. A comprehensive provisional therefore carries drawings, high level independent and dependent claims, and a description section with as many embodiments as possible. Drafted that way, the complete application can be built on the provisional rather than started again from nothing.

The provisional holds the priority date while you use the time. Common next steps are a thorough prior art search, further development of the invention, conversations with investors, and a decision on which countries matter. Before the deadline runs out you file a complete application, or an international application, claiming priority from the provisional. Subject matter added in the meantime can be included in that filing, though it takes the later date rather than the priority date of the provisional.