Opposition · USPTO

Opposition 91304770

OtherUSPTO

Opposition 91304770 at USPTO between Karsten Manufacturing Corporation and Foshan Zhanyi Technology Co., Ltd., over the mark PINGZEN, filed Jan 28, 2026. Status in the office record: other.

View PINGZENGet this data via the API
Status
Other
Result
Other
Filed
Jan 28, 2026
Marks involved
50
Parties

Who is involved

The parties as named in the office record.

Opponent

Karsten Manufacturing Corporation

Company trademarks
Respondent

Foshan Zhanyi Technology Co., Ltd.

Timeline

How the case has moved

Dates from the USPTO record and the PINGZEN filing.

  1. PINGZEN filed

    Application 99123193 filed at the USPTO.

  2. Opposition filed

    Karsten Manufacturing Corporation started opposition 91304770 at USPTO against PINGZEN.
Marks

Marks involved

1 contested mark, 49 marks the challenger relies on.

MarkRoleApplicationOffice
PINGZENContested99123193USPTO
PINGRelied on72080826USPTO
PINGRelied on73797084USPTO
PINGRelied on73803028USPTO
PINGRelied on73810646USPTO
PINGRelied on73811144USPTO
PING EYE 2Relied on73818956USPTO
PINGRelied on74018761USPTO
PINGRelied on76418702USPTO
PINGRelied on76418818USPTO
PINGRelied on77022878USPTO
PINGRelied on77043860USPTO

+38 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_8b1a2e79-bb1b-481c-8e11-624734d9ccfa
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_8b1a2e79-bb1b-481c-8e11-624734d9ccfa",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91304770",
  "status": "other",
  "office_code": "US",
  "filed_date": "2026-01-28",
  "parties": [
    {
      "name": "Karsten Manufacturing Corporation",
      "role": "opponent"
    },
    {
      "name": "Foshan Zhanyi Technology Co., Ltd.",
      "role": "respondent"
    }
  ]
}