generated: '2026-07-20'
method: derived
source: openapi/patsnap-openapi-original.json
summary: >-
  Entity-relationship sketch derived from the primary domains of the Patsnap Open Platform
  OpenAPI (356 operations, 47 tag domains, 1829 schemas). The core graph centres on the
  Patent entity, joined by identifier (patent_id / publication number) to bibliographic,
  legal, citation, family, valuation and monitoring data, alongside parallel Company/Assignee,
  Drug/Life-sciences, Literature and Chemical domains.
entities:
- name: Patent
  key: patent_id / publication number (PN)
  domains: [Patent Data Search, Patent Basic Data, Patent Mining Data, Patent Legal Data]
  relationships:
  - type: has_one
    target: Bibliography
    via: patent_id
  - type: has_one
    target: LegalStatus
    via: patent_id
  - type: has_many
    target: Claim
    via: patent_id
  - type: has_many
    target: Citation
    via: patent_id (backward/forward)
  - type: belongs_to
    target: PatentFamily
    via: family_id
  - type: belongs_to
    target: Company
    via: assignee
  - type: has_one
    target: Valuation
    via: patent_id
- name: PatentFamily
  relationships:
  - type: has_many
    target: Patent
    via: family_id
- name: Company
  key: company_id / assignee
  domains: [Enterprise Basic Data, Enterprise IP Data, Enterprise Tech Analysis, Enterprise Persona Data]
  relationships:
  - type: has_many
    target: Patent
    via: assignee
- name: Drug
  key: drug_id
  domains: [Drug Basic Data, Drug Clinical Trial Data, Drug Mining Data, Chemical and Bio Data]
  relationships:
  - type: has_many
    target: ClinicalTrial
    via: drug_id
  - type: has_many
    target: Patent
    via: drug-patent linkage
- name: ClinicalTrial
  domains: [Drug Clinical Trial Data]
  relationships:
  - type: belongs_to
    target: Drug
    via: drug_id
- name: Literature
  key: literature_id
  domains: [Literature Data]
- name: ChemicalStructure
  domains: [Chemical and Bio Data, Chemical SAR Extract]
notes: >-
  Light hand-derivation of the marquee domain entities; the full 1829-schema graph includes
  many request/response envelopes not modelled here. id-prefix conventions live in the object
  reference under the API reference docs.