Opposition · USPTO

Opposition 91305301

OtherUSPTO

Opposition 91305301 at USPTO between Karsten Manufacturing Corporation and Minling Li, over the mark PING'AN'GUO, filed Feb 18, 2026. Status in the office record: other.

View PING'AN'GUOGet this data via the API
Status
Other
Result
Other
Filed
Feb 18, 2026
Marks involved
50
Parties

Who is involved

The parties as named in the office record.

Opponent

Karsten Manufacturing Corporation

Company trademarks
Respondent

Minling Li

Timeline

How the case has moved

Dates from the USPTO record and the PING'AN'GUO filing.

  1. PING'AN'GUO filed

    Application 99150417 filed at the USPTO.

  2. Opposition filed

    Karsten Manufacturing Corporation started opposition 91305301 at USPTO against PING'AN'GUO.
Marks

Marks involved

1 contested mark, 49 marks the challenger relies on.

MarkRoleApplicationOffice
PING'AN'GUOContested99150417USPTO
PINGRelied on72080826USPTO
PINGRelied on73797084USPTO
PINGRelied on73810646USPTO
PINGRelied on73811144USPTO
PING EYE 2Relied on73818956USPTO
PINGRelied on74018761USPTO
PINGRelied on76418362USPTO
PINGRelied on76418701USPTO
PINGRelied on76418702USPTO
PINGRelied on76418818USPTO
PINGRelied on77022878USPTO

+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_8faa4eff-c75d-453e-af15-5f483a3c52ad
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_8faa4eff-c75d-453e-af15-5f483a3c52ad",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91305301",
  "status": "other",
  "office_code": "US",
  "filed_date": "2026-02-18",
  "parties": [
    {
      "name": "Karsten Manufacturing Corporation",
      "role": "opponent"
    },
    {
      "name": "Minling Li",
      "role": "respondent"
    }
  ]
}