Opposition · USPTO

Opposition 91305854

OtherUSPTO

Opposition 91305854 at USPTO between Caterpillar Inc. and Changzhou Rongkai Muffler Co., Ltd., over the mark RKLLCAT, filed Mar 12, 2026. Status in the office record: other.

View RKLLCATGet this data via the API
Status
Other
Result
Other
Filed
Mar 12, 2026
Marks involved
20
Parties

Who is involved

The parties as named in the office record.

Opponent

Caterpillar Inc.

Company trademarks
Respondent

Changzhou Rongkai Muffler Co., Ltd.

Timeline

How the case has moved

Dates from the USPTO record and the RKLLCAT filing.

  1. RKLLCAT filed

    Application 99359434 filed at the USPTO.

  2. Opposition filed

    Caterpillar Inc. started opposition 91305854 at USPTO against RKLLCAT.
Marks

Marks involved

1 contested mark, 19 marks the challenger relies on.

MarkRoleApplicationOffice
RKLLCATContested99359434USPTO
CATRelied on71575190USPTO
CATRelied on72164427USPTO
CATRelied on72174081USPTO
CATRelied on72452924USPTO
CATRelied on73762371USPTO
CATRelied on75236985USPTO
CATRelied on75830492USPTO
CATRelied on77289081USPTO
CATRelied on78815915USPTO
CATRelied on78815922USPTO
CATRelied on78980626USPTO

+8 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_10423f7e-eda7-459a-ac98-f028c8dfca4c
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_10423f7e-eda7-459a-ac98-f028c8dfca4c",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91305854",
  "status": "other",
  "office_code": "US",
  "filed_date": "2026-03-12",
  "parties": [
    {
      "name": "Caterpillar Inc.",
      "role": "opponent"
    },
    {
      "name": "Changzhou Rongkai Muffler Co., Ltd.",
      "role": "respondent"
    }
  ]
}