Winthrop & Weinstine, P.A.
Winthrop & Weinstine, P.A. is a trademark firm. It is the firm of record on 5,220 trademarks, 2,304 of them still active, most of them at the USPTO. 70% of its decided applications were registered.
- Trademarks of record
- 5,220
- Still active
- 2,304
- Registration rate
- 70%
- Jurisdictions
- 2
Where Winthrop & Weinstine, P.A. files
Each mark counts once here: an international registration is grouped with its country designations, not counted once per country.
By classA mark can cover several classes
Filings per year
New trademarks Winthrop & Weinstine, P.A. has filed each year, counting each mark once.
- Peak year · 317 filed
- 2018
- 2022 to 2026 · filed
- 745
- First filing
- 1906
Filings by year: 1906: 1, 1914: 1, 1926: 1, 1929: 1, 1948: 1, 1949: 1, 1952: 1, 1953: 1, 1958: 2, 1962: 2, 1963: 1, 1964: 3, 1965: 4, 1966: 2, 1967: 2, 1969: 2, 1970: 1, 1971: 1, 1972: 1, 1973: 1, 1974: 2, 1975: 2, 1976: 2, 1979: 1, 1980: 7, 1981: 4, 1982: 2, 1983: 5, 1984: 1, 1985: 2, 1986: 3, 1987: 7, 1988: 2, 1989: 7, 1990: 22, 1991: 11, 1992: 10, 1993: 12, 1994: 17, 1995: 28, 1996: 31, 1997: 41, 1998: 52, 1999: 38, 2000: 57, 2001: 70, 2002: 57, 2003: 131, 2004: 254, 2005: 197, 2006: 153, 2007: 295, 2008: 156, 2009: 129, 2010: 126, 2011: 151, 2012: 171, 2013: 177, 2014: 234, 2015: 291, 2016: 268, 2017: 268, 2018: 317, 2019: 200, 2020: 215, 2021: 219, 2022: 149, 2023: 115, 2024: 182, 2025: 171, 2026: 128.
Companies Winthrop & Weinstine, P.A. files for
Owners on the firm's latest 48 filings that Signa links to a company record.
Northrop Grumman Systems Corporation
United States
4 recent filingsCanadian Standards Association
Canada
4 recent filingsCSA Group Testing & Certification Inc.
Canada
2 recent filingsSNK Corporation
Japan
2 recent filingsBevie Handcraft NZ Limited
New Zealand
2 recent filingsWilliams Sound, LLC
United States
1 recent filing
18 more owners in these filings are not linked to a company record.
Latest filings
The most recent applications with Winthrop & Weinstine, P.A. as the firm of record.
Browse all filings| Mark | Status | Office | Owner | Classes | Filed |
|---|---|---|---|---|---|
| SITECHECK | examining | USPTO | CSA Group Testing & Certification Inc. | 42, 45 | 2026-10-26 |
| SITECHECK | examining | USPTO | CSA Group Testing & Certification Inc. | 42, 45 | 2026-10-26 |
| BOBA CRUNCH | examining | USPTO | From Farm to Table Canada Inc. | 30 | 2026-10-21 |
| FORTRESS MEDICAL GROUP | examining | USPTO | Emerald IV Therapy, LLC | 44 | 2026-10-13 |
| EVERYVOICE | examining | USPTO | Williams Sound, LLC | 9, 42 | 2026-10-12 |
| NIKKO | examining | USPTO | LaCrosse Technology, Ltd. | 14 | 2026-10-08 |
| VS STUDIO | examining | USPTO | SNK Corporation | 9 | 2026-10-05 |
| VS STUDIO | examining | USPTO | SNK Corporation | 9 | 2026-10-05 |
Attorneys of record
Named attorneys and agents on the firm's filings, as reported by the offices.
- Michael T. Olsen1,746 filings
- Timothy D. Sitzmann1,428 filings
- Stephen R. Baird1,157 filings
- Bradley J. Walz227 filings
- Martha J. Engel158 filings
- Timothy Sitzmann128 filings
- Michael Olsen77 filings
- Jeffrey R. Stone53 filings
- Nancy L Moersch43 filings
- Daniel J. Kelly39 filings
- Brian Pollack29 filings
- Timothy David Sitzmann22 filings
- Troy E. Arnlund16 filings
- Megan M. Miller12 filings
- Tim Sitzmann11 filings
- Charles A. Durant9 filings
- Karen A. Brennan8 filings
- Brian R. Pollack8 filings
- Wesley D. Anderson7 filings
- Michael T. Olsen, Esq.4 filings
Also on record: Cathleen F. Dahl, Alicia Griffin Mills, Sharon D. Armstrong, Ryan F. Urness, Hannah Weber, Susan A. Perera, Danielle N. Johnson, Draeke H. Weseman, Amy A. Rollins, Dave Tyner, Mark T Johnson, Erin A. Oglesbay, Arthur S. Greenbaun, Stephen R. Baird, Esq., Micheal T. Olsen, Timothy D. Stizmann.
Showing part of the firm's roster.
About Winthrop & Weinstine, P.A.
How many trademarks has Winthrop & Weinstine, P.A. filed?
Winthrop & Weinstine, P.A. is the firm of record on 5,220 trademarks tracked by Signa.
What is Winthrop & Weinstine, P.A.'s trademark registration rate?
70% of the decided applications Winthrop & Weinstine, P.A. handled were registered.
Where does Winthrop & Weinstine, P.A. file trademarks?
Most of Winthrop & Weinstine, P.A.'s filings are at the USPTO, with 5,136 marks.
How long has Winthrop & Weinstine, P.A. been filing trademarks?
Signa has filings by Winthrop & Weinstine, P.A. from 1906 to 2026.
Get this data via the API
Every number on this page comes from the Signa API. Pull Winthrop & Weinstine, P.A.'s filings into your own product with one request.
GET/v1/firms/{id}/analyticsPortfolio by office, class and year, plus disputes
GET/v1/firms/{id}Firm record, registration rate and attorney count
GET/v1/firms/{id}/trademarksEvery trademark the firm is of record on
ID=firm_019d846d-cb01-72ac-a4d9-cba52ca621f9
curl https://api.signa.so/v1/firms/$ID/analytics \
-H "Authorization: Bearer $SIGNA_API_KEY"{
"object": "analytics_report",
"subject": {
"id": "firm_019d846d-cb01-72ac-a4d9-cba52ca621f9",
"object": "firm",
"name": "WINTHROP & WEINSTINE, P.A."
},
"portfolio": {
"mark_count": 5220,
"active_count": 2304,
"jurisdiction_spread": {
"US": 5136,
"WO": 84
}
}
}