Trademark attorney

Yong-Chang Tang

Brennan, Manna & Diamond, LLCUnited States

Yong-Chang Tang of Brennan, Manna & Diamond, LLC (United States) is listed as the attorney or agent of record on 16 trademark filings, as reported by the trademark offices.

Browse filings Get this data via the API

Data current as of May 1, 2026

Filings of record: 16
Still active: 0
Registration rate: 56%
Latest filingFirst in 2013: 2014

Coverage

Where these filings were made

Each mark counts once here: an international registration is grouped with its country designations, not counted once per country.

By office

USPTO16100%

By classA mark can cover several classes

Class 41Education and Entertainment638%
Class 44Medical, Beauty, and Agricultural638%
Class 35Advertising and Business213%
Class 36Insurance and Financial213%
Class 43Hotels and Restaurants213%

Activity

Filings per year

New filings of record each year, counting each mark once.

Peak year · 14 filed: 2013
2010 to 2014 · filed: 16
First filing: 2013

Filings

Latest filings of record

The most recent applications naming this attorney or agent.

Browse all filings

Mark	Status	Office	Owner	Classes	Filed
HATTIE LARLHAM	abandoned	USPTO	Hattie Larlham Care Group	44	2014-10-01
HATTIE LARLHAM	abandoned	USPTO	Hattie Larlham Care Group	44	2014-10-01
HATTIE LARLHAM CIRCLE OF CARING RUDOLPH H. GARFIED	abandoned	USPTO	Hattie Larlham Care Group	36	2013-10-01
HATTIE LARLHAM CREATIVE ARTS	cancelled	USPTO	Hattie Larlham Care Group	41	2013-09-02
HATTIE LARLHAM CREATIVE ARTS PROGRAM	cancelled	USPTO	Hattie Larlham Care Group	41	2013-09-02
THE RUDOLPH H. GARFIELD CIRCLE OF CARING	abandoned	USPTO	Hattie Larlham Care Group	36	2013-09-02
HATTIE'S GARDENS	cancelled	USPTO	Hattie Larlham Care Group	44	2013-09-02
THE PLAY CENTER AT HATTIE LARLHAM	cancelled	USPTO	Hattie Larlham Care Group	41	2013-09-02

API

Get this data via the API

Every number on this page comes from the Signa API. Pull the same records into your own product with one request.

GET/v1/attorneys/{id}
Attorney record, firm and filing stats
GET/v1/attorneys/{id}/analytics
Filings by office, class and year
GET/v1/attorneys/{id}/trademarks
Every trademark the attorney is of record on

Get API key View docs

GET /v1/attorneys/{id}

ID=att_019d2a48-13a3-728d-9a1e-3aa1e3066a3b
curl https://api.signa.so/v1/attorneys/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "att_019d2a48-13a3-728d-9a1e-3aa1e3066a3b",
  "object": "attorney",
  "name": "Yong-Chang Tang",
  "firm_name": "Brennan, Manna & Diamond, LLC",
  "country_code": "US",
  "trademark_count": 16
}