Opposition · USPTO

Opposition 91307766

SuspendedUSPTO

Opposition 91307766 at USPTO between OpenAI OpCo, LLC and TaxNerd, Inc., over the mark TAXNERD GPT, filed Jun 1, 2026. Status in the office record: suspended.

View TAXNERD GPTGet this data via the API
Status
Suspended
Filed
Jun 1, 2026
Marks involved
7
Parties

Who is involved

The parties as named in the office record.

Opponent

OpenAI OpCo, LLC

Company trademarks
Respondent

TaxNerd, Inc.

Timeline

How the case has moved

Dates from the USPTO record and the TAXNERD GPT filing.

  1. TAXNERD GPT filed

    Application 99170247 filed at the USPTO.

  2. Opposition filed

    OpenAI OpCo, LLC started opposition 91307766 at USPTO against TAXNERD GPT.
  3. Next

    Suspended

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 6 marks the challenger relies on.

MarkRoleApplicationOffice
TAXNERD GPTContested99170247USPTO
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_eb1a2f7e-1d0c-4283-8d89-eba319c3f14a
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_eb1a2f7e-1d0c-4283-8d89-eba319c3f14a",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91307766",
  "status": "suspended",
  "office_code": "US",
  "filed_date": "2026-06-01",
  "parties": [
    {
      "name": "OpenAI OpCo, LLC",
      "role": "opponent"
    },
    {
      "name": "TaxNerd, Inc.",
      "role": "respondent"
    }
  ]
}