David M Sullivan

Trademark attorney of record on 439 registered marks in USPTO records.

Top Trademark Attorney
439registrations of record
7list appearances
#1best rank achieved
11states represented

Recognition

Top Trademark Attorney #9 — Oklahoma 2025 · 13 registrations
Top Trademark Attorney #8 — Oklahoma 2022 · 12 registrations
Top Trademark Attorney #8 — Oklahoma 2017 · 13 registrations
Top Trademark Attorney #9 — Oklahoma 2014 · 11 registrations
Top Trademark Attorney #1 — Oklahoma 2013 · 28 registrations
Top Trademark Attorney #5 — Kansas 2010 · 12 registrations
Top Trademark Attorney #3 — Oklahoma 2006 · 21 registrations

Registrations by year

202610
202517
20246
20236
202221
20218
202014
201920
201821
201719
201616
201521
201422
201346
201224
201116
201023
200915
200818
200713

Where their clients are incorporated

Oklahoma223 registrations
Delaware89 registrations
Kansas61 registrations
California23 registrations
Texas17 registrations
Florida5 registrations
South Dakota4 registrations
Missouri2 registrations

Based on the owner address of record. Companies frequently incorporate in one state while operating in another, so this reflects client domicile rather than where the attorney practises.

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How this list is compiled

TrademarkToolbox Top Trademark Attorney lists are not a ranking of attorney quality. Rank is based solely on the number of trademark registrations that list the attorney as attorney of record, for applications tied to the jurisdictions listed above. It measures filing volume, nothing else.

Volume reflects firm size, practice model and client mix. A solo practitioner handling a small number of complex matters will rank below a high-volume filing practice, and that says nothing about the quality of either. These lists are not an endorsement, a recommendation, or a substitute for your own due diligence when choosing counsel.

Data comes from USPTO public records as indexed by TrademarkToolbox. Attorney names are matched conservatively: we do not merge similar names, so an attorney who appears in the record under more than one form may be undercounted. Counts include registered marks only, by registration year. Full methodology · Request a correction or removal