Trademark attorney

Phong D. Nguyen

Phong D. Nguyen of Baker Hostetler, LLP (United States) is listed as the attorney or agent of record on 23 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: 23
Still active: 0
Registration rate: 39%
Latest filingFirst in 1997: 2004

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

USPTO23100%

By classA mark can cover several classes

Class 9Computers and Scientific Devices1565%
Class 42Computer and Scientific Services417%
Class 30Staple Foods14%
Class 35Advertising and Business14%
Class 38Telecommunications14%

Activity

Filings per year

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

Peak year · 10 filed: 2003
2000 to 2004 · filed: 21
First filing: 1997

Clients

Companies on these filings

Owners on the latest 23 filings of record that Signa links to a company record.

Southwest Research Institute
United States
22 recent filings

1 more owner in these filings is not linked to a company record.

Filings

Latest filings of record

The most recent applications naming this attorney or agent.

Browse all filings

Mark	Status	Office	Owner	Classes	Filed
BOBASCO	abandoned	USPTO	Curtis, Robert W	30	2004-08-06
UNIVERSAL SYNTHETIC GAS REACTOR	abandoned	USPTO	Southwest Research Institute	42	2003-08-18
USGR	abandoned	USPTO	Southwest Research Institute	42	2003-06-26
C-FOCAS	abandoned	USPTO	Southwest Research Institute	42	2003-06-26
C-FOCAS	abandoned	USPTO	Southwest Research Institute	9	2003-06-26
TESS	abandoned	USPTO	Southwest Research Institute	9	2003-02-20
TESS	abandoned	USPTO	Southwest Research Institute	9	2003-01-31
LEAN PLUS	abandoned	USPTO	Southwest Research Institute	35	2003-01-10

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_019d1c28-2d7b-76b1-a8a3-60a24d3f62a1
curl https://api.signa.so/v1/attorneys/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "att_019d1c28-2d7b-76b1-a8a3-60a24d3f62a1",
  "object": "attorney",
  "name": "Phong D. Nguyen",
  "firm_name": "Baker Hostetler, LLP",
  "country_code": "US",
  "trademark_count": 23
}