Query docs clearly list applicant.name, inventor.name and exact-match fields; rate-limit headers are documented but no plan numbers or prices appear on any public Lens page, and the subscriptions page returns 403 without sign-in.
- What worked
- Patent request field reference and API terms on commercial vs trial use are explicit; unauthenticated call fails fast with a clear 401 message.
- What got in the way
- Per-minute and per-month limits and prices are not published publicly.