Opposition · USPTO

Opposition 91306831

PendingUSPTO

Opposition 91306831 at USPTO between Anthropic, PBC and Vivy Tech Corp, over the mark CLAU, filed Apr 22, 2026. Status in the office record: pending.

View CLAUGet this data via the API
Status
Pending
Filed
Apr 22, 2026
Marks involved
7
Parties

Who is involved

The parties as named in the office record.

Opponent

Anthropic, PBC

Respondent

Vivy Tech Corp

Timeline

How the case has moved

Dates from the USPTO record and the CLAU filing.

  1. CLAU filed

    Application 98791422 filed at the USPTO.

  2. Opposition filed

    Anthropic, PBC started opposition 91306831 at USPTO against CLAU.
  3. Next

    Awaiting decision

    No decision is recorded at USPTO yet.
Marks

Marks involved

3 contested marks, 4 marks the challenger relies on.

MarkRoleApplicationOffice
CLAUContested98791422USPTO
CLAUContested98791432USPTO
CLAUContested98799874USPTO
CLAUDERelied on97790228USPTO
CLAUDERelied on98325070USPTO
CLAUDERelied on98431491USPTO
CLAUDERelied on98431492USPTO
API

Get this data via the API

Every fact on this page comes from the Signa API. Track oppositions and cancellations on any mark with one request.

  • GET/v1/proceedings/{id}

    Parties, dates, outcome and every mark in the case

  • GET/v1/proceedings?trademark_id={trademark_id}

    Every proceeding on a mark

Get API keyView docs
GET /v1/proceedings/{id}
ID=prc_35c9d6aa-2049-4eea-b8ba-a14180b9bdc9
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_35c9d6aa-2049-4eea-b8ba-a14180b9bdc9",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91306831",
  "status": "pending",
  "office_code": "US",
  "filed_date": "2026-04-22",
  "parties": [
    {
      "name": "Anthropic, PBC",
      "role": "opponent"
    },
    {
      "name": "Vivy Tech Corp",
      "role": "respondent"
    }
  ]
}