Opposition · USPTO

Opposition 91301045

OtherUSPTO

Opposition 91301045 at USPTO between Mattel, Inc. and Zhengzhou Kaiweisi Technology Co., Ltd., over the mark KENWOSIN, filed Aug 15, 2025. Status in the office record: other.

View KENWOSINGet this data via the API
Status
Other
Result
Other
Filed
Aug 15, 2025
Marks involved
12
Parties

Who is involved

The parties as named in the office record.

Opponent

Mattel, Inc.

Respondent

Zhengzhou Kaiweisi Technology Co., Ltd.

Timeline

How the case has moved

Dates from the USPTO record and the KENWOSIN filing.

  1. KENWOSIN filed

    Application 98859415 filed at the USPTO.

  2. Opposition filed

    Mattel, Inc. started opposition 91301045 at USPTO against KENWOSIN.
Marks

Marks involved

1 contested mark, 11 marks the challenger relies on.

MarkRoleApplicationOffice
KENWOSINContested98859415USPTO
KENRelied on72106617USPTO
KENRelied on72183081USPTO
KENRelied on78484346USPTO
KENRelied on90511478USPTO
KENCORERelied on97554411USPTO
KENSATIONALRelied on97585089USPTO
KENOUGHRelied on98023821USPTO
I AM KENOUGHRelied on98100486USPTO
KENRelied on98111468USPTO
KENDOMRelied on98139273USPTO
KENBASSADORSRelied on98709354USPTO
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_9ea12245-c740-497b-b5bb-ad5899255a2f
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_9ea12245-c740-497b-b5bb-ad5899255a2f",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91301045",
  "status": "other",
  "office_code": "US",
  "filed_date": "2025-08-15",
  "parties": [
    {
      "name": "Mattel, Inc.",
      "role": "opponent"
    },
    {
      "name": "Zhengzhou Kaiweisi Technology Co., Ltd.",
      "role": "respondent"
    }
  ]
}