US trademark by serial or registration number

One US trademark by serial number or registration number, with every field of the search result: status and dates, classes, goods and services, owner, attorney, basis, design codes, disclaimer, proceedings, image link and status page. include=history adds prosecution_history (every status event with its date, newest first) and include=documents adds documents (the record's filings, office actions and notices with date, description, type and link).

Every response includes credits_used: the credits this call cost.

Parameters

Every endpoint also takes fresh, raw, fields (see lean responses and caching).

Example

curl "https://api.api.sh/trademarks/v1/mark?serial=72414176" \
  -H "x-api-key: $APISH_KEY"

import os, requests

res = requests.get(
    "https://api.api.sh/trademarks/v1/mark",
    params={"serial": "72414176"},
    headers={"x-api-key": os.environ["APISH_KEY"]},
    timeout=120,
)
res.raise_for_status()
data = res.json()

const url = new URL("https://api.api.sh/trademarks/v1/mark");
url.searchParams.set("serial", "72414176");

const res = await fetch(url, { headers: { "x-api-key": process.env.APISH_KEY } });
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const data = await res.json();

Response

A JSON object with the fields described above, plus raw (the source's own data), cached, fetched_at and credits_used. Errors return {"success": false, "error": "…"} with the HTTP status (see errors). A lookup that ran but found nothing (404) costs the price above; refused calls and errors on our side are free (what's charged).