Opposition · USPTO

Opposition 91308820

PendingUSPTO

Opposition 91308820 at USPTO between STMicroelectronics International N.V, and Siterwell Electronics Co., Limited, over the mark STC, filed Jul 14, 2026. Status in the office record: pending.

View STCGet this data via the API
Status
Pending
Filed
Jul 14, 2026
Marks involved
11
Parties

Who is involved

The parties as named in the office record.

Opponent

STMicroelectronics International N.V,

Company trademarks
Respondent

Siterwell Electronics Co., Limited

Company trademarks
Timeline

How the case has moved

Dates from the USPTO record and the STC filing.

  1. STC filed

    Application 99552601 filed at the USPTO.

  2. Opposition filed

    STMicroelectronics International N.V, started opposition 91308820 at USPTO against STC.
  3. Next

    Awaiting decision

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 10 marks the challenger relies on.

MarkRoleApplicationOffice
STCContested99552601USPTO
STRelied on73688278USPTO
STRelied on75389355USPTO
STACRelied on77484747USPTO
ST25Relied on79182527USPTO
ST60Relied on79282357USPTO
ST QVARRelied on79284786USPTO
ST-ONERelied on79344774USPTO
STGAPRelied on79364886USPTO
STRelied on85008787USPTO
STRelied on85522548USPTO
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_dd955cbb-339c-4d19-9986-17138f0dc996
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_dd955cbb-339c-4d19-9986-17138f0dc996",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91308820",
  "status": "pending",
  "office_code": "US",
  "filed_date": "2026-07-14",
  "parties": [
    {
      "name": "STMicroelectronics International N.V,",
      "role": "opponent"
    },
    {
      "name": "SITERWELL ELECTRONICS CO., LIMITED",
      "role": "respondent"
    }
  ]
}