Trademark attorney

Leonard Kaplan

Leonard Kaplan of Nutter, McClennen & Fish (United States) is listed as the attorney or agent of record on 7 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: 7
Still active: 0
Registration rate: 71%
Latest filingFirst in 1983: 1985

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

USPTO7100%

By classA mark can cover several classes

Class 5Pharmaceuticals229%
Class 9Computers and Scientific Devices229%
Class 38Telecommunications229%
Class 42Computer and Scientific Services114%

Activity

Filings per year

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

Peak year · 3 filed: 1985
1981 to 1985 · filed: 7
First filing: 1983

Filings

Latest filings of record

The most recent applications naming this attorney or agent.

Browse all filings

Mark	Status	Office	Owner	Classes	Filed
ABAX	cancelled	USPTO	Abax Business Systems, Inc.	42	1985-04-22
ROCK THE BOAT RADIO	cancelled	USPTO	MCC Broadcasting Corporation	38	1985-02-12
ROCK THE BOAT RADIO	cancelled	USPTO	MCC Broadcasting Corporation	38	1985-02-12
THE CALCULUS TOOLKIT	abandoned	USPTO	Addison-Wesley Publishing Company, Inc.	9	1984-12-10
MONTAGE PICTURE PROCESSOR	cancelled	USPTO	Montage Computer Corporation	9	1984-02-29
JB	abandoned	USPTO	Boiron, Inc.	5	1983-09-12
BORNEMAN	cancelled	USPTO	Boiron, Inc.	5	1983-09-09

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

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GET /v1/attorneys/{id}

ID=att_019d1675-5f86-72a6-82ff-4ef8ed10c19e
curl https://api.signa.so/v1/attorneys/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"

Response

{
  "id": "att_019d1675-5f86-72a6-82ff-4ef8ed10c19e",
  "object": "attorney",
  "name": "Leonard Kaplan",
  "firm_name": "Nutter, McClennen & Fish",
  "country_code": "US",
  "trademark_count": 7
}