Opposition · USPTO

Opposition 91305335

OtherUSPTO

Opposition 91305335 at USPTO between OpenAI OpCo, LLC and Byzantine Chain Ltd, over the mark FURGPT, filed Feb 18, 2026. Status in the office record: other.

View FURGPTGet this data via the API
Status
Other
Result
Other
Filed
Feb 18, 2026
Marks involved
7
Parties

Who is involved

The parties as named in the office record.

Opponent

OpenAI OpCo, LLC

Respondent

Byzantine Chain Ltd

Timeline

How the case has moved

Dates from the USPTO record and the FURGPT filing.

  1. FURGPT filed

    Application 99267755 filed at the USPTO.

  2. Opposition filed

    OpenAI OpCo, LLC started opposition 91305335 at USPTO against FURGPT.
Marks

Marks involved

1 contested mark, 6 marks the challenger relies on.

MarkRoleApplicationOffice
FURGPTContested99267755USPTO
GPT-3Relied on90092493USPTO
GPTRelied on97733259USPTO
CHATGPTRelied on97733261USPTO
GPT-4Relied on97836275USPTO
CHATGPTRelied on97928136USPTO
GPT-5Relied on98089548USPTO
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_f21b1c28-c318-425b-aca9-b0e3277729c2
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_f21b1c28-c318-425b-aca9-b0e3277729c2",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91305335",
  "status": "other",
  "office_code": "US",
  "filed_date": "2026-02-18",
  "parties": [
    {
      "name": "OpenAI OpCo, LLC",
      "role": "opponent"
    },
    {
      "name": "Byzantine Chain Ltd",
      "role": "respondent"
    }
  ]
}