Trademark attorney

Karl L. Klassen

Ashurst Perkins Coie US LLPUnited States

Karl L. Klassen of Ashurst Perkins Coie US LLP (United States) is listed as the attorney or agent of record on 32 trademark filings, as reported by the trademark offices.

Browse filingsGet this data via the API
Filings of record
32
Still active
11
Registration rate
50%
Latest filingFirst in 2006
2026
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

+5 more

Activity

Filings per year

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

Peak year · 6 filed
2008
2022 to 2026 · filed
7
First filing
2006

Filings by year: 2006: 1, 2007: 5, 2008: 6, 2009: 2, 2010: 1, 2011: 1, 2015: 4, 2016: 2, 2018: 1, 2019: 2, 2024: 4, 2026: 3.

Filings

Latest filings of record

The most recent applications naming this attorney or agent.

Browse all filings
MarkStatusOfficeOwnerClassesFiled
TRUPASSERpending publicationUSPTOKrusader LLC282026-07-21
NO GOALIE, NO PROBLEM.pending publicationUSPTOKrusader LLC282026-07-21
KRUSADERexaminingUSPTOKrusader LLC282026-06-16
KRUSADER KallowedUSPTOKrusader LLC92024-08-19
TENDYregisteredUSPTOKrusader LLC282024-08-19
XregisteredUSPTOExcel Health, Inc.352024-06-27
WRITE-ON-IT!registeredUSPTOWrite-On-It! LLC62024-04-19
KRUSADER KregisteredUSPTOKrusader LLC282019-07-25
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 keyView docs
GET /v1/attorneys/{id}
ID=att_019d1ffe-37c9-7595-9073-851dfbee72fe
curl https://api.signa.so/v1/attorneys/$ID \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "id": "att_019d1ffe-37c9-7595-9073-851dfbee72fe",
  "object": "attorney",
  "name": "Karl L. Klassen",
  "firm_name": "Ashurst Perkins Coie US LLP",
  "country_code": "US",
  "trademark_count": 32
}