Ronald S. Kadden
Ronald S. Kadden of Leydig, Voit & Mayer, Ltd. (United States) is listed as the attorney or agent of record on 627 trademark filings, as reported by the trademark offices.
- Filings of record
- 627
- Still active
- 252
- Registration rate
- 75%
- Latest filingFirst in 1948
- 2025
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 classA mark can cover several classes
- Class 9Computers and Scientific Devices23537%
- Class 16Paper Goods and Printed Matter11518%
- Class 41Education and Entertainment10617%
- Class 10Medical Apparatus7111%
- Class 35Advertising and Business6811%
- Class 42Computer and Scientific Services538%
- Class 36Insurance and Financial488%
- Class 25Clothing345%
+34 more
Filings per year
New filings of record each year, counting each mark once.
- Peak year · 47 filed
- 2017
- 2021 to 2025 · filed
- 80
- First filing
- 1948
Filings by year: 1948: 1, 1952: 4, 1958: 1, 1962: 1, 1963: 2, 1970: 2, 1972: 1, 1975: 1, 1976: 1, 1977: 3, 1978: 2, 1979: 1, 1982: 2, 1983: 1, 1986: 2, 1987: 1, 1988: 2, 1989: 2, 1990: 2, 1991: 5, 1992: 6, 1993: 5, 1994: 3, 1995: 10, 1996: 7, 1997: 7, 1998: 8, 1999: 18, 2000: 15, 2001: 17, 2002: 17, 2003: 15, 2004: 19, 2005: 15, 2006: 18, 2007: 24, 2008: 21, 2009: 27, 2010: 16, 2011: 32, 2012: 24, 2013: 17, 2014: 14, 2015: 18, 2016: 18, 2017: 47, 2018: 30, 2019: 25, 2020: 17, 2021: 23, 2022: 15, 2023: 23, 2024: 13, 2025: 6.
Companies on these filings
Owners on the latest 48 filings of record that Signa links to a company record.
Carl Zeiss Meditec AG
Germany
11 recent filingsCarl Zeiss Microscopy GmbH
Germany
8 recent filingsCarl Zeiss Vision GmbH
Germany
8 recent filingsCofra AG
Switzerland
3 recent filingsCarl Zeiss SMT GmbH
Germany
2 recent filingsCarl Zeiss Industrielle Messtechnik GmbH
Germany
2 recent filingsOntario Plants Propagation Limited
Canada
2 recent filingsCarl Zeiss Meditec SAS
France
1 recent filingMigros-Genossenschafts-Bund
Switzerland
1 recent filing
4 more owners in these filings are not linked to a company record.
Latest filings of record
The most recent applications naming this attorney or agent.
Browse all filings| Mark | Status | Office | Owner | Classes | Filed |
|---|---|---|---|---|---|
| TRUEGONOMICS | registered | USPTO | Carl Zeiss Meditec AG | 10 | 2025-07-25 |
| SLIDESTREAM | registered | USPTO | Carl Zeiss Microscopy GmbH | 9 | 2025-04-16 |
| NLX | registered | USPTO | Carl Zeiss SMT GmbH | 9 | 2025-03-24 |
| OMNISEM | registered | USPTO | Carl Zeiss Microscopy GmbH | 9 | 2025-03-20 |
| BREGAL ANTHOS PRIVATE EQUITY PARTNERS | abandoned | USPTO | Cofra AG | 36 | 2025-02-11 |
| PERFORMASUN | registered | USPTO | Carl Zeiss Vision GmbH | 1, 9 | 2025-01-21 |
| MICROSCOPY COPILOT | registered | USPTO | Carl Zeiss Microscopy GmbH | 9, 42 | 2024-12-20 |
| CORRELATE | abandoned | USPTO | Carl Zeiss Industrielle Messtechnik GmbH | 9 | 2024-11-18 |
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}/analyticsFilings by office, class and year
GET/v1/attorneys/{id}/trademarksEvery trademark the attorney is of record on
ID=att_019d14a9-c6f5-77ce-94b2-03a1acec4af4
curl https://api.signa.so/v1/attorneys/$ID \
-H "Authorization: Bearer $SIGNA_API_KEY"{
"id": "att_019d14a9-c6f5-77ce-94b2-03a1acec4af4",
"object": "attorney",
"name": "Ronald S. Kadden",
"firm_name": "Leydig, Voit & Mayer, Ltd.",
"country_code": "US",
"trademark_count": 627
}