Mark B Harrison

Trademark attorney of record on 1,032 registered marks in USPTO records.

Top Trademark Attorney
1,032registrations of record
2list appearances
#4best rank achieved
32states represented

Recognition

Top Trademark Attorney #4 — Maryland 2003 · 15 registrations
Top Trademark Attorney #8 — Massachusetts 2000 · 15 registrations

Registrations by year

20221
20192
20186
20177
201612
201517
201427
201344
201233
201126
201048
200979
200876
200769
200679
200555
200474
2003104
2002100
200172

Where their clients are incorporated

Delaware266 registrations
Maryland65 registrations
Massachusetts44 registrations
California27 registrations
Virginia18 registrations
Illinois17 registrations
New York17 registrations
Florida14 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