Opposition · USPTO

Opposition 91307608

SuspendedUSPTO

Opposition 91307608 at USPTO between OpenAI OpCo, LLC and MetaPhase Consulting LLC, over the mark CHALLENGEGPT, filed May 26, 2026. Status in the office record: suspended.

View CHALLENGEGPTGet this data via the API
Status
Suspended
Filed
May 26, 2026
Marks involved
7
Parties

Who is involved

The parties as named in the office record.

Opponent

OpenAI OpCo, LLC

Company trademarks
Respondent

MetaPhase Consulting LLC

Timeline

How the case has moved

Dates from the USPTO record and the CHALLENGEGPT filing.

  1. CHALLENGEGPT filed

    Application 99423207 filed at the USPTO.

  2. Opposition filed

    OpenAI OpCo, LLC started opposition 91307608 at USPTO against CHALLENGEGPT.
  3. Next

    Suspended

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 6 marks the challenger relies on.

MarkRoleApplicationOffice
CHALLENGEGPTContested99423207USPTO
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_b2b1e564-704a-4397-9bd4-d282ee58b591
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_b2b1e564-704a-4397-9bd4-d282ee58b591",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91307608",
  "status": "suspended",
  "office_code": "US",
  "filed_date": "2026-05-26",
  "parties": [
    {
      "name": "OpenAI OpCo, LLC",
      "role": "opponent"
    },
    {
      "name": "MetaPhase Consulting LLC",
      "role": "respondent"
    }
  ]
}