Opposition · USPTO

Opposition 91305818

OtherUSPTO

Opposition 91305818 at USPTO between Duke University and Warmbox LLC, over the mark SADUKE, filed Mar 11, 2026. Status in the office record: other.

View SADUKEGet this data via the API
Status
Other
Result
Other
Filed
Mar 11, 2026
Marks involved
18
Parties

Who is involved

The parties as named in the office record.

Opponent

Duke University

Company trademarks
Respondent

Warmbox LLC

Timeline

How the case has moved

Dates from the USPTO record and the SADUKE filing.

  1. SADUKE filed

    Application 99207504 filed at the USPTO.

  2. Opposition filed

    Duke University started opposition 91305818 at USPTO against SADUKE.
Marks

Marks involved

1 contested mark, 17 marks the challenger relies on.

MarkRoleApplicationOffice
SADUKEContested99207504USPTO
DUKE UNIVERSITYRelied on74208934USPTO
DUKE UNIVERSITYRelied on74208935USPTO
[Design mark]Relied on74208937USPTO
DRelied on74209062USPTO
DUKERelied on75347293USPTO
DUKERelied on75567914USPTO
DUKERelied on78944306USPTO
DUKERelied on78944344USPTO
IRON DUKESRelied on85356737USPTO
DRelied on85447767USPTO
WASHINGTON DUKE INN & GOLF CLUBRelied on85756810USPTO

+6 more marks in this case

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_0be3b6d4-0e59-46b0-b592-e236a7c0fd4d
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_0be3b6d4-0e59-46b0-b592-e236a7c0fd4d",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91305818",
  "status": "other",
  "office_code": "US",
  "filed_date": "2026-03-11",
  "parties": [
    {
      "name": "Duke University",
      "role": "opponent"
    },
    {
      "name": "WARMBOX LLC",
      "role": "respondent"
    }
  ]
}