Search Firms
curl --request GET \
--url https://api.signa.so/v1/firms \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.signa.so/v1/firms"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.signa.so/v1/firms', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.signa.so/v1/firms",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.signa.so/v1/firms"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.signa.so/v1/firms")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.signa.so/v1/firms")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"object": "list",
"data": [
{
"id": "firm_2kLm9X",
"object": "firm",
"name": "Smith & Associates LLP",
"canonical_name": "SMITH & ASSOCIATES LLP",
"country_code": "US",
"attorney_count": 42,
"trademark_count": 15823,
"active_count": 13640,
"grant_rate": 0.78,
"latest_filing": "2026-04-08",
"created_at": "2024-09-12T11:42:01Z"
}
],
"has_more": true,
"pagination": { "cursor": "eyJpZCI6..." },
"request_id": "req_xyz"
}
Firms
Search Firms
Search law firms with trademark prosecution activity
GET
/
v1
/
firms
Search Firms
curl --request GET \
--url https://api.signa.so/v1/firms \
--header 'Authorization: Bearer <token>'import requests
url = "https://api.signa.so/v1/firms"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('https://api.signa.so/v1/firms', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.signa.so/v1/firms",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.signa.so/v1/firms"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.signa.so/v1/firms")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.signa.so/v1/firms")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"object": "list",
"data": [
{
"id": "firm_2kLm9X",
"object": "firm",
"name": "Smith & Associates LLP",
"canonical_name": "SMITH & ASSOCIATES LLP",
"country_code": "US",
"attorney_count": 42,
"trademark_count": 15823,
"active_count": 13640,
"grant_rate": 0.78,
"latest_filing": "2026-04-08",
"created_at": "2024-09-12T11:42:01Z"
}
],
"has_more": true,
"pagination": { "cursor": "eyJpZCI6..." },
"request_id": "req_xyz"
}
Overview
Returns a paginated list of law firms derived from attorney affiliations on ingested trademarks. Filter by country, attorney count, filing volume, and sort by activity metrics.Recent changes
The beta?include=stats option has been removed; always-on summary fields now carry the supported firm counts.
Query Parameters
string
Case-insensitive substring search on firm name.
string
ISO 3166-1 alpha-2 country code filter.
integer
Minimum number of attorneys at the firm.
integer
Minimum number of trademark filings handled.
string
default:"-trademark_count"
Sort field. One of
-trademark_count, trademark_count, -attorney_count, attorney_count, -grant_rate, grant_rate, -name, name.integer
default:"20"
Page size (1-50).
string
Pagination cursor from a previous response.
Response
object[]
Array of firm summary records.
string
Firm ID (
firm_...).string
Display name of the firm.
string
Normalized name used for entity resolution.
string
Two-letter country code.
integer
Number of distinct attorneys at the firm.
integer
Total trademarks handled by the firm’s attorneys. Counts marks: a Madrid IR family counts once, matching the default grouped
GET /v1/trademarks listings.integer
Count of active trademarks (registered + pending). Always present; 0 when stats not yet computed.
number
Share of concluded prosecutions (registered + expired + cancelled) that were ever granted (0-1).
string
ISO date of the most recent filing handled.
string
ISO 8601 timestamp when this firm record was created.
{
"object": "list",
"data": [
{
"id": "firm_2kLm9X",
"object": "firm",
"name": "Smith & Associates LLP",
"canonical_name": "SMITH & ASSOCIATES LLP",
"country_code": "US",
"attorney_count": 42,
"trademark_count": 15823,
"active_count": 13640,
"grant_rate": 0.78,
"latest_filing": "2026-04-08",
"created_at": "2024-09-12T11:42:01Z"
}
],
"has_more": true,
"pagination": { "cursor": "eyJpZCI6..." },
"request_id": "req_xyz"
}
Code Examples
curl "https://api.signa.so/v1/firms?country_code=US&min_filings=500&sort=-trademark_count&limit=20" \
-H "Authorization: Bearer sig_YOUR_KEY"
import { Signa } from "@signa-so/sdk";
const signa = new Signa({ api_key: process.env.SIGNA_API_KEY });
const page = await signa.firms.list({
country_code: "US",
min_filings: 500,
sort: "-trademark_count",
limit: 20,
});
Errors
| Status | Type | Description |
|---|---|---|
| 400 | validation_error | Invalid query parameter |
| 401 | unauthorized | Missing or invalid API key |
| 403 | forbidden | API key lacks the trademarks:read scope |
| 429 | rate_limited | Too many requests |
| 503 | service_unavailable | Firm search is temporarily unavailable; retry after Retry-After |
Related Endpoints
- Retrieve Firm: full firm detail with optional includes
- Firm Attorneys: attorneys at a firm
- Firm Trademarks: marks handled by a firm
- Search Attorneys: search attorneys instead