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Signa models the parties behind a trademark — and links the same company’s records together across offices into a single resolved entity.

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Party types

TypePrefixWhat it is
Entityent_The cross-office identity linking the owner records that belong to the same company.
Ownerown_A single office’s applicant/registrant record, as that office filed it.
Attorneyatt_Named attorney of record on a trademark.
Firmfirm_Law firm associated with the attorney.
Owners and entities each have their own API surface. Attorneys and firms appear on the trademark records they’re associated with.

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Resolved entities

The same company files in every office it cares about, and each office keeps its own owner record with its own spelling. A resolved entity links those owner records into one object, so you can see a company’s complete footprint across offices at once. Signa links, it doesn’t merge — the per-office owner records are never rewritten, so own_ IDs stay stable while the entity points at them. 
GET /v1/entities/ent_R3jK9mN2
A resolved entity gives you:
  • Members — the owner records it links, one per office, each with the evidence that justified the link.
  • Global portfolio — every mark across all members in one filterable list (/v1/entities/{id}/trademarks).
  • Corporate family — the GLEIF parent and direct subsidiaries (/v1/entities/{id}/family).
  • Public-company facts — ticker, lei, publicly_traded, aggregated across the company’s office records.

How entities are resolved

Linking signals, adjudication, accuracy, and ID/merge handling — the full deep dive.

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Owners

An owner is a single office’s record of an applicant or registrant. Each owner profile carries:
  • Canonical name — the normalized, deduplicated form used for matching (the original display name is also returned).
  • Country — primary jurisdiction.
  • Public-company links — SEC (CIK) and GLEIF (LEI) identifiers when matched.
  • Statistics — filing counts, active marks, Nice-class distribution, top jurisdictions.
GET /v1/owners/own_abc123
Use owners when you need the exact per-office record; use entities for company-level questions (“everything this company owns, everywhere”).

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Corporate relationships

Signa connects corporate parents and subsidiaries from GLEIF Level 2 data. The entity family is the primary surface: 
GET /v1/entities/ent_R3jK9mN2/family
GLEIF Level 2 covers LEI-reporting companies only — an absent edge does not imply the absence of a corporate relationship.

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Endpoints

EndpointPurpose
GET /v1/entitiesSearch and filter resolved entities
GET /v1/entities/{id}One entity with members + link evidence
GET /v1/entities/{id}/trademarksGlobal portfolio across all members
GET /v1/entities/{id}/familyGLEIF corporate parent and subsidiaries
GET /v1/ownersSearch and filter owners
GET /v1/owners/{id}A single per-office owner record

Entity Resolution

How Signa links owners into resolved entities across offices.