Opposition · USPTO

Opposition 91303667

OtherUSPTO

Opposition 91303667 at USPTO between The Ohio State University and Death-Omen LLC, over the mark O, filed Dec 10, 2025. Status in the office record: other.

View OGet this data via the API
Status
Other
Result
Other
Filed
Dec 10, 2025
Marks involved
3
Parties

Who is involved

The parties as named in the office record.

Opponent

The Ohio State University

Company trademarks
Respondent

Death-Omen LLC

Timeline

How the case has moved

Dates from the USPTO record and the O filing.

  1. O filed

    Application 98902741 filed at the USPTO.

  2. Opposition filed

    The Ohio State University started opposition 91303667 at USPTO against O.
Marks

Marks involved

1 contested mark, 2 marks the challenger relies on.

MarkRoleApplicationOffice
OContested98902741USPTO
ORelied on75619315USPTO
ORelied on85935543USPTO
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_7327706a-9067-4e24-8e10-f0dd062129a7
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_7327706a-9067-4e24-8e10-f0dd062129a7",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91303667",
  "status": "other",
  "office_code": "US",
  "filed_date": "2025-12-10",
  "parties": [
    {
      "name": "The Ohio State University",
      "role": "opponent"
    },
    {
      "name": "Death-Omen LLC",
      "role": "respondent"
    }
  ]
}