Opposition · USPTO

Opposition 91304695

PendingUSPTO

Opposition 91304695 at USPTO between Alcon Inc. and ACON Pharmaceuticals Inc., over the mark ACON, filed Jan 26, 2026. Status in the office record: pending.

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Status
Pending
Filed
Jan 26, 2026
Marks involved
17
Parties

Who is involved

The parties as named in the office record.

Opponent

Alcon Inc.

Company trademarks
Respondent

ACON Pharmaceuticals Inc.

Timeline

How the case has moved

Dates from the USPTO record and the ACON filing.

  1. ACON filed

    Application 98834501 filed at the USPTO.

  2. Opposition filed

    Alcon Inc. started opposition 91304695 at USPTO against ACON.
  3. Next

    Awaiting decision

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 16 marks the challenger relies on.

MarkRoleApplicationOffice
ACONContested98834501USPTO
ALCONRelied on71607468USPTO
ALCONRelied on73078918USPTO
ALCONRelied on73709732USPTO
ALCONRelied on74116783USPTO
ALCONRelied on85025114USPTO
ALCONRelied on85025183USPTO
ALCONRelied on85025187USPTO
ALCONRelied on85521528USPTO
ALCONRelied on85693927USPTO
ALCONRelied on85693950USPTO
AUTHORIZED ALCON RETAILERRelied on87051320USPTO

+5 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_b8aee135-34d4-4560-b986-c6a5d65f1e98
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_b8aee135-34d4-4560-b986-c6a5d65f1e98",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91304695",
  "status": "pending",
  "office_code": "US",
  "filed_date": "2026-01-26",
  "parties": [
    {
      "name": "Alcon Inc.",
      "role": "opponent"
    },
    {
      "name": "ACON Pharmaceuticals Inc.",
      "role": "respondent"
    }
  ]
}