Current status of one application

Answers: what is the current state of this US patent application — pending, allowed, abandoned, or granted (and as which patent), who filed it, who examines it, what it claims priority to, and how much activity (office actions, assignments, PTAB challenges) it has seen. One object: status {code, description, category, date}, patent_number/grant_date (null until granted), publication_number/publication_date, applicant_name + applicant_entity_id (use with /v1/entities), examiner_name, art_unit, entity_status (small|micro|undiscounted), continuity {parents, children}, counts, and provenance source {product, file_date} / as_of / stale. For the timeline call /transactions; for ownership call /assignments. 404 not_found if we have no record.