Trademark attorney

Mark A. Steiner

Duane Morris LLPUnited States

Mark A. Steiner of Duane Morris LLP (United States) is listed as the attorney or agent of record on 1,175 trademark filings, as reported by the trademark offices.

Filings of record
1,175
Still active
217
Registration rate
58%
Latest filingFirst in 1947
2025
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

By classA mark can cover several classes

+37 more

Activity

Filings per year

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

Peak year · 109 filed
1999
2021 to 2025 · filed
84
First filing
1947

Filings by year: 1947: 2, 1948: 1, 1963: 1, 1974: 1, 1979: 1, 1983: 1, 1984: 13, 1985: 6, 1986: 12, 1987: 8, 1988: 2, 1989: 33, 1990: 53, 1991: 55, 1992: 53, 1993: 69, 1994: 79, 1995: 59, 1996: 41, 1997: 9, 1998: 24, 1999: 109, 2000: 73, 2001: 42, 2002: 21, 2003: 12, 2004: 7, 2005: 20, 2006: 19, 2007: 27, 2008: 24, 2009: 25, 2010: 33, 2011: 37, 2012: 19, 2013: 20, 2014: 21, 2015: 25, 2016: 8, 2017: 5, 2018: 6, 2019: 6, 2020: 7, 2021: 9, 2022: 4, 2023: 44, 2024: 18, 2025: 9.

Clients

Companies on these filings

Owners on the latest 48 filings of record that Signa links to a company record.

12 more owners in these filings are not linked to a company record.

Filings

Latest filings of record

The most recent applications naming this attorney or agent.

Browse all filings
MarkStatusOfficeOwnerClassesFiled
MUSEUM OF TRUTHallowedUSPTOSusan Liautaud9, 16, 35, 412025-08-20
CLINICAL CANCER RESEARCHabandonedUSPTOAmerican Association for Cancer Research, Inc.412025-04-09
CANCER EPIDEMIOLOGY, BIOMARKERS & PREVENTIONregisteredUSPTOAmerican Association for Cancer Research, Inc.412025-04-09
CANCER RESEARCHabandonedUSPTOAmerican Association for Cancer Research, Inc.412025-04-09
GIARDINETTOregisteredUSPTOOtis McAllister, Inc.322025-03-27
GIARDINETTO FAMILY OWNED SINCE 1964registeredUSPTOOtis McAllister, Inc.322025-03-27
CREATIVE DIGITAL PERFORMANCEabandonedUSPTONoble Studios35, 422025-02-04
[Design Mark]registeredUSPTOTrellis Group Inc.9, 35, 38, 41, 422025-01-24
API

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  • 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 /v1/attorneys/{id}
ID=att_019d14cd-4f60-7165-9b0c-8bef2bde7027
curl https://api.signa.so/v1/attorneys/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "att_019d14cd-4f60-7165-9b0c-8bef2bde7027",
  "object": "attorney",
  "name": "Mark A. Steiner",
  "firm_name": "Duane Morris LLP",
  "country_code": "US",
  "trademark_count": 1175
}