USPTO trademark

API

Opposition periodUSPTOWord markClass 4

"API" is a word mark owned by American Petroleum Institute, filed at the USPTO on April 22, 2026. It is in its opposition period and covers class 4 (Lubricants and Fuels).

View American Petroleum Institute portfolioGet this data via the API
Official USPTO record
API trademark as filed
As filed with the USPTO
Status
Opposition period
Since September 29, 2026
Filed
April 22, 2026
Registered
Not yet
Expires
Not recorded
Application no.
99780497
Registration no.
Not yet
Office
USPTO
United States Patent and Trademark Office
Mark type
Word mark
1 class
Ownership

Who owns API

The owner on file, matched to the company behind it. Every owner-name spelling for that company is grouped on its page.

Owner

American Petroleum Institute

Washington, United States

215 trademarks in the portfolioView company

Representative

Sarah A. Keefe

Womble Bond Dickinson (US) LLP

Goods and services

What the mark covers

The products and services API is filed for, grouped by Nice class.

History

What has happened so far

Steps recorded by the USPTO, newest first.

  1. Official gazette publication confirmation e-mailed
  2. Published for opposition
  3. Notification of notice of publication e-mailed
  4. Approved for pub - principal register
  5. Assigned to examiner
  6. New application office supplied data entered
  7. Application filing receipt mailed
  8. New application entered
FAQ

About API

Who owns the trademark "API"?

The USPTO trademark "API" (application 99780497) is owned by American Petroleum Institute.

What is the status of "API"?

Its status at the USPTO is: opposition period.

API

Get this data via the API

Everything on this page comes from the Signa API. Pull API and marks like it into your own product with one request.

  • GET/v1/trademarks/{id}

    The full record: owners, classes, dates and images

  • GET/v1/trademarks/{id}/events

    Every step in the office history

  • GET/v1/proceedings?trademark_id={id}

    Oppositions and cancellations against the mark

Get API keyView docs
GET /v1/trademarks/{id}
ID=tm_019dc23f-5b21-7759-8e0a-9ac0317af190
curl https://api.signa.so/v1/trademarks/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "tm_019dc23f-5b21-7759-8e0a-9ac0317af190",
  "object": "trademark",
  "mark_text": "API",
  "status": {
    "primary": "pending",
    "stage": "pending_opposition"
  },
  "office_code": "US",
  "application_number": "99780497",
  "filing_date": "2026-04-22",
  "nice_classes": [
    4
  ],
  "owners": [
    {
      "name": "American Petroleum Institute",
      "entity_id": "ent_019ebbad-3789-774a-a514-a2e87fad10e1"
    }
  ]
}