Opposition · USPTO

Opposition 91302638

OtherUSPTO

Opposition 91302638 at USPTO between L-Nutra Inc. and Mary Katherine Michalak LLC, over the mark LONGEVI-T, filed Oct 22, 2025. Status in the office record: other.

View LONGEVI-TGet this data via the API
Status
Other
Result
Other
Filed
Oct 22, 2025
Marks involved
6
Parties

Who is involved

The parties as named in the office record.

Opponent

L-Nutra Inc.

Company trademarks
Respondent

Mary Katherine Michalak LLC

Timeline

How the case has moved

Dates from the USPTO record and the LONGEVI-T filing.

  1. LONGEVI-T filed

    Application 98879493 filed at the USPTO.

  2. Opposition filed

    L-Nutra Inc. started opposition 91302638 at USPTO against LONGEVI-T.
Marks

Marks involved

1 contested mark, 5 marks the challenger relies on.

MarkRoleApplicationOffice
LONGEVI-TContested98879493USPTO
NUTRITION FOR LONGEVITYRelied on86530922USPTO
LONGEVITY BARRelied on86530925USPTO
LONGEVITY BARRelied on86934556USPTO
NUTRITION FOR LONGEVITYRelied on86934580USPTO
L-NUTRA NUTRITION FOR LONGEVITYRelied on87255833USPTO
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_14c5f477-9c8a-45ec-9b67-2529aff0678c
curl https://api.signa.so/v1/proceedings/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "prc_14c5f477-9c8a-45ec-9b67-2529aff0678c",
  "object": "proceeding",
  "proceeding_type": "opposition",
  "proceeding_number": "91302638",
  "status": "other",
  "office_code": "US",
  "filed_date": "2025-10-22",
  "parties": [
    {
      "name": "L-Nutra Inc.",
      "role": "opponent"
    },
    {
      "name": "Mary Katherine Michalak LLC",
      "role": "respondent"
    }
  ]
}