Opposition · USPTO

Opposition 91307298

SuspendedUSPTO

Opposition 91307298 at USPTO between Leadway (HK) Limited and ACON Pharmaceuticals Inc., over the mark ACON, filed May 13, 2026. Status in the office record: suspended.

View ACONGet this data via the API
Status
Suspended
Filed
May 13, 2026
Marks involved
4
Parties

Who is involved

The parties as named in the office record.

Opponent

Leadway (HK) Limited

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

    Leadway (HK) Limited started opposition 91307298 at USPTO against ACON.
  3. Next

    Suspended

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 3 marks the challenger relies on.

MarkRoleApplicationOffice
ACONContested98834501USPTO
ACONRelied on75536474USPTO
ACONRelied on77920309USPTO
ACONRelied on78409446USPTO
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_6dc4c017-38de-411c-ae77-e3534245cbb5
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_6dc4c017-38de-411c-ae77-e3534245cbb5",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91307298",
  "status": "suspended",
  "office_code": "US",
  "filed_date": "2026-05-13",
  "parties": [
    {
      "name": "Leadway (HK) Limited",
      "role": "opponent"
    },
    {
      "name": "ACON Pharmaceuticals Inc.",
      "role": "respondent"
    }
  ]
}