Chain-of-title & Lien Diligence

Check recorded transfers, security interests, and releases before a brand transaction

When a mark is part of an acquisition, financing, or portfolio sale, diligence teams need to know who received title, whether any lender recorded a security interest, and whether that lien was released. This recipe walks from owner-level lien filtering to a mark-level chain of title, then pairs a release to the original security-interest reel and frame.

Use List Assignments for cross-mark transaction filtering, Trademark Assignments for one mark’s chain, and Get Assignment for the full parties and affected marks.

Prerequisites

• A Signa API key with trademarks:read
• The target owner ID (own_...) or entity ID (ent_...)
• The trademark ID (tm_...) for any mark you want to inspect directly

1. Find recorded liens for the owner

   Start with type=security_interest and the borrower or seller owner ID. The collection endpoint is filter-required, so every request stays scoped to a diligence question.

   cURL

   curl -G "https://api.signa.so/v1/assignments" \
     -H "Authorization: Bearer $SIGNA_API_KEY" \
     --data-urlencode "owner_id=own_22222222-2222-4222-8222-222222222222" \
     --data-urlencode "type=security_interest" \
     --data-urlencode "limit=20"
   

   If the borrower sits inside a larger corporate family, repeat the same query with entity_id. Signa expands the entity to member owners before filtering assignment parties.

2. Inspect the lien

   Retrieve the security-interest record to confirm the parties and affected marks. Save the reel_no and frame_no, because releases point back to those values.

   TypeScript

   const lien = await signa.assignments.retrieve(
     "asg_66666666-6666-4666-8666-666666666666",
   );
   
   const grant = {
     reel_no: lien.reel_no,
     frame_no: lien.frame_no,
     lender: lien.parties.find((party) => party.role === "assignee")?.name,
     marks: lien.properties.map((property) => property.trademark_id),
   };
   

   For the worked example, the lien has reel_no: "9102" and frame_no: "0100", with Northstar Brands LLC as assignor and First Continental Bank, N.A. as assignee.

3. Review the mark chain

   Pull the per-mark chain to see transfers, liens, and releases together in recorded-date order.

   cURL

   curl "https://api.signa.so/v1/trademarks/tm_11111111-1111-4111-8111-111111111111/assignments" \
     -H "Authorization: Bearer $SIGNA_API_KEY"
   

   In the example chain, asg_55555555-5555-4555-8555-555555555555 records title moving from OldCo Consumer Products Inc. to Northstar Brands LLC. asg_66666666-6666-4666-8666-666666666666 records the security interest. asg_77777777-7777-4777-8777-777777777777 records a later release.

4. Pair releases to grants

   A release points back to the grant it releases with release_of_reel_no and release_of_frame_no. Match those fields against the security-interest reel_no and frame_no.

   TypeScript

   const transactions = await chain.toArray();
   
   const grants = transactions.filter((item) => item.conveyance_type === "security_interest");
   const releases = transactions.filter((item) => item.conveyance_type === "release");
   
   const releasePairs = grants.map((grant) => ({
     grant_id: grant.id,
     grant_reel_no: grant.reel_no,
     grant_frame_no: grant.frame_no,
     release: releases.find(
       (release) =>
         release.release_of_reel_no === grant.reel_no &&
         release.release_of_frame_no === grant.frame_no,
     ) ?? null,
   }));
   

   In the worked example, the release has release_of_reel_no: "9102" and release_of_frame_no: "0100", so it clears the 9102/0100 security interest. If no release pairs to a grant, escalate it for legal review before treating the mark as clean collateral or clean title.

5. Decide what to clear

   Use the combined evidence to separate clean title from open issues:

   • A current owner should appear in a recent assignment or other transfer record.
   • A security interest without a matching release may require payoff, consent, or an exception in the transaction documents.
   • A release matching the grant reel/frame is the strongest normalized signal that the recorded lien was cleared.
   • If the owner is part of a larger entity, rerun the lien filter with entity_id to catch affiliates and office-specific owner records.