Opposition · USPTO

Opposition 91301650

OtherUSPTO

Opposition 91301650 at USPTO between Summer Fridays, LLC and Jiafeng Li, over the mark SUMMER SUNDAY, filed Sep 11, 2025. Status in the office record: other.

View SUMMER SUNDAYGet this data via the API
Status
Other
Result
Other
Filed
Sep 11, 2025
Marks involved
11
Parties

Who is involved

The parties as named in the office record.

Opponent

Summer Fridays, LLC

Company trademarks
Respondent

Jiafeng Li

Timeline

How the case has moved

Dates from the USPTO record and the SUMMER SUNDAY filing.

  1. SUMMER SUNDAY filed

    Application 99004824 filed at the USPTO.

  2. Opposition filed

    Summer Fridays, LLC started opposition 91301650 at USPTO against SUMMER SUNDAY.
Marks

Marks involved

1 contested mark, 10 marks the challenger relies on.

MarkRoleApplicationOffice
SUMMER SUNDAYContested99004824USPTO
SUMMER FRIDAYSRelied on87510382USPTO
SUMMER FRIDAYSRelied on88004076USPTO
SUMMER FRIDAYSRelied on88326242USPTO
SUMMER FRIDAYSRelied on88463033USPTO
BABYMOON BELLY BALMRelied on88463052USPTO
SUMMER FRIDAYSRelied on88565067USPTO
SUMMER FRIDAYS SUPER AMINO GEL CLEANSERRelied on88663549USPTO
SUMMER FRIDAYS SELF-CARE CLUBRelied on90052153USPTO
SUMMER FRIDAYSRelied on90107064USPTO
SUMMER FRIDAYS MIDNIGHT RITUAL RETINOLRelied on97293636USPTO
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_a4c9b94d-8309-4b0e-befc-fed4f513cc4d
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_a4c9b94d-8309-4b0e-befc-fed4f513cc4d",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91301650",
  "status": "other",
  "office_code": "US",
  "filed_date": "2025-09-11",
  "parties": [
    {
      "name": "Summer Fridays, LLC",
      "role": "opponent"
    },
    {
      "name": "Jiafeng Li",
      "role": "respondent"
    }
  ]
}