Opposition · USPTO

Opposition 91307613

SuspendedUSPTO

Opposition 91307613 at USPTO between Trek Bicycle Corporation and Yunxikangcheng (Qingdao) Tire Co., Ltd, over the mark MAMMOTREK, filed May 26, 2026. Status in the office record: suspended.

View MAMMOTREKGet this data via the API
Status
Suspended
Filed
May 26, 2026
Marks involved
19
Parties

Who is involved

The parties as named in the office record.

Opponent

Trek Bicycle Corporation

Company trademarks
Respondent

Yunxikangcheng (Qingdao) Tire Co., Ltd

Timeline

How the case has moved

Dates from the USPTO record and the MAMMOTREK filing.

  1. MAMMOTREK filed

    Application 99516069 filed at the USPTO.

  2. Opposition filed

    Trek Bicycle Corporation started opposition 91307613 at USPTO against MAMMOTREK.
  3. Next

    Suspended

    No decision is recorded at USPTO yet.
Marks

Marks involved

1 contested mark, 18 marks the challenger relies on.

MarkRoleApplicationOffice
MAMMOTREKContested99516069USPTO
TREKRelied on73259070USPTO
TREKRelied on74583173USPTO
TREKKINGRelied on74604152USPTO
ETREKRelied on75933601USPTO
TREK BICYCLE STORERelied on77221529USPTO
TREKRelied on77433264USPTO
TREKRelied on78171262USPTO
DUAL TREKKERRelied on79164060USPTO
TREKRelied on85065052USPTO
TREK BICYCLES OF TUCSONRelied on85173419USPTO
TREKRelied on86006347USPTO

+7 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_b9ee4927-562b-4010-9ce8-26eb2730533a
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_b9ee4927-562b-4010-9ce8-26eb2730533a",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91307613",
  "status": "suspended",
  "office_code": "US",
  "filed_date": "2026-05-26",
  "parties": [
    {
      "name": "Trek Bicycle Corporation",
      "role": "opponent"
    },
    {
      "name": "Yunxikangcheng (Qingdao) Tire Co., Ltd",
      "role": "respondent"
    }
  ]
}