Top Trademark Attorneys — California
Attorneys with the most trademark registrations to their name for businesses in California, by registration year. Updated with every data refresh.
2026 is still in progress. Registrations continue to be issued through the year, so these counts will rise and the order may change. Completed years are shown for comparison.
Top Trademark Attorneys — businesses in California, 2026
| # | Attorney | Registrations |
|---|---|---|
| 1 | Trevor A Caudle | 165 |
| 2 | Michael Markos | 120 |
| 3 | Michael N Cohen | 78 |
| 4 | Emiah Youman | 69 |
| 5 | Sam Pierce | 65 |
| 6 | Daniel Saam | 64 |
| 7 | Donna L Mirman | 64 |
| 8 | Marek Krizka | 60 |
| 9 | Kevin Crosman | 58 |
| 10 | Andrew T Rissler | 56 |
Top Trademark Attorneys — businesses in California, 2025
| # | Attorney | Registrations |
|---|---|---|
| 1 | Trevor A Caudle | 209 |
| 2 | Michael Markos | 157 |
| 3 | Daren Harris | 113 |
| 4 | Marek Krizka | 104 |
| 5 | Nicholas Belcastro | 87 |
| 6 | Kevin Crosman | 86 |
| 7 | Marc E Hankin | 76 |
| 8 | Jianmin Zhou | 75 |
| 9 | Justin Johanson | 72 |
| 10 | Paul Martello | 72 |
Top Trademark Attorneys — businesses in California, 2024
| # | Attorney | Registrations |
|---|---|---|
| 1 | Michael Markos | 167 |
| 2 | Trevor A Caudle | 129 |
| 3 | Justin Johanson | 107 |
| 4 | Nicholas Belcastro | 98 |
| 5 | Daren Harris | 93 |
| 6 | Marek Krizka | 90 |
| 7 | Rezarta Mataj | 90 |
| 8 | Adriano Pacifici | 89 |
| 9 | Tommy Sf Wang | 88 |
| 10 | Andrea Selkregg | 87 |
Top Trademark Attorneys — businesses in California, 2023
| # | Attorney | Registrations |
|---|---|---|
| 1 | Michael Markos | 122 |
| 2 | Trevor A Caudle | 106 |
| 3 | Adriano Pacifici | 86 |
| 4 | Nicholas Belcastro | 86 |
| 5 | Marc E Hankin | 80 |
| 6 | Nicholas D Myers | 73 |
| 7 | Lauren C Concepcion | 72 |
| 8 | Jalissa Bauman Horne | 71 |
| 9 | Andrea Selkregg | 69 |
| 10 | Paul Martello | 69 |
Top Trademark Attorneys — businesses in California, 2022
| # | Attorney | Registrations |
|---|---|---|
| 1 | Thomas L Difloure | 154 |
| 2 | James Donald Peters | 109 |
| 3 | Raj Abhyanker | 104 |
| 4 | Trevor A Caudle | 99 |
| 5 | Jalissa Bauman Horne | 95 |
| 6 | Marc E Hankin | 88 |
| 7 | Michael Markos | 85 |
| 8 | Andrew T Rissler | 84 |
| 9 | Christina S Loza | 78 |
| 10 | Javier Gomez | 70 |
Top Trademark Attorneys — businesses in California, 2021
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 161 |
| 2 | James Donald Peters | 139 |
| 3 | Raj Abhyanker | 117 |
| 4 | Marc E Hankin | 97 |
| 5 | Jalissa Bauman Horne | 92 |
| 6 | Michael Markos | 90 |
| 7 | Trevor A Caudle | 89 |
| 8 | Erin C Bray | 80 |
| 9 | J Scott Gerien | 79 |
| 10 | Christina S Loza | 78 |
Top Trademark Attorneys — businesses in California, 2020
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 140 |
| 2 | Christopher J Day | 126 |
| 3 | James Donald Peters | 119 |
| 4 | Michael Markos | 112 |
| 5 | Pollie Gautsch | 104 |
| 6 | J Scott Gerien | 89 |
| 7 | Thomas L Difloure | 80 |
| 8 | Omid E Khalifeh | 73 |
| 9 | Tommy Sf Wang | 73 |
| 10 | Irene K Chong | 72 |
Top Trademark Attorneys — businesses in California, 2019
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 198 |
| 2 | Michael Markos | 192 |
| 3 | Thomas Dunlap | 142 |
| 4 | Christopher J Day | 123 |
| 5 | Tommy Sf Wang | 102 |
| 6 | James Donald Peters | 94 |
| 7 | Pollie Gautsch | 93 |
| 8 | J Scott Gerien | 88 |
| 9 | Elizabeth Oliner | 80 |
| 10 | Gene Bolmarcich | 80 |
Top Trademark Attorneys — businesses in California, 2018
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 354 |
| 2 | Thomas Dunlap | 177 |
| 3 | Michael Markos | 132 |
| 4 | Christopher J Day | 120 |
| 5 | J Scott Gerien | 107 |
| 6 | Kristi W Whalen | 89 |
| 7 | Joshua A Schaul | 80 |
| 8 | Elizabeth Oliner | 76 |
| 9 | Tommy Sf Wang | 76 |
| 10 | Pollie Gautsch | 75 |
Top Trademark Attorneys — businesses in California, 2017
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 469 |
| 2 | Christopher J Day | 161 |
| 3 | J Scott Gerien | 109 |
| 4 | Marc E Hankin | 86 |
| 5 | Pollie Gautsch | 84 |
| 6 | Luke Brean | 76 |
| 7 | Alex Patel | 71 |
| 8 | Tommy Sf Wang | 70 |
| 9 | Elizabeth Oliner | 69 |
| 10 | Joshua A Schaul | 64 |
Top Trademark Attorneys — businesses in California, 2016
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 544 |
| 2 | Christopher J Day | 169 |
| 3 | Matthew H Swyers | 143 |
| 4 | J Scott Gerien | 122 |
| 5 | Marc E Hankin | 93 |
| 6 | Elizabeth Oliner | 81 |
| 7 | Luke Brean | 81 |
| 8 | Alex Patel | 71 |
| 9 | Jungjin Lee | 65 |
| 10 | Pollie Gautsch | 63 |
Top Trademark Attorneys — businesses in California, 2015
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 517 |
| 2 | Matthew H Swyers | 219 |
| 3 | Christopher J Day | 144 |
| 4 | J Scott Gerien | 143 |
| 5 | Luke Brean | 95 |
| 6 | Elizabeth Oliner | 93 |
| 7 | Alex Patel | 88 |
| 8 | Pollie Gautsch | 87 |
| 9 | Marc E Hankin | 76 |
| 10 | John B Dawson | 74 |
Top Trademark Attorneys — businesses in California, 2014
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 474 |
| 2 | Matthew H Swyers | 256 |
| 3 | Christopher J Day | 119 |
| 4 | J Scott Gerien | 112 |
| 5 | Alex Patel | 107 |
| 6 | Pollie Gautsch | 94 |
| 7 | Marc E Hankin | 80 |
| 8 | Luke Brean | 71 |
| 9 | Daniel M Cislo | 68 |
| 10 | Natu J Patel | 65 |
Top Trademark Attorneys — businesses in California, 2013
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 406 |
| 2 | Matthew H Swyers | 228 |
| 3 | J Scott Gerien | 104 |
| 4 | Christopher J Day | 93 |
| 5 | Daniel M Cislo | 80 |
| 6 | Marc E Hankin | 75 |
| 7 | Pollie Gautsch | 74 |
| 8 | Jungjin Lee | 62 |
| 9 | Christina S Loza | 60 |
| 10 | Xavier Morales | 60 |
Top Trademark Attorneys — businesses in California, 2012
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 355 |
| 2 | Matthew H Swyers | 184 |
| 3 | J Scott Gerien | 93 |
| 4 | Pollie Gautsch | 79 |
| 5 | Xavier Morales | 70 |
| 6 | Christopher J Day | 69 |
| 7 | Daniel M Cislo | 67 |
| 8 | Jason R Lee | 52 |
| 9 | Thomas I Rozsa | 52 |
| 10 | Lindsay J Hulley | 51 |
Top Trademark Attorneys — businesses in California, 2011
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 161 |
| 2 | Thomas I Rozsa | 120 |
| 3 | Xavier Morales | 100 |
| 4 | J Scott Gerien | 97 |
| 5 | Matthew H Swyers | 85 |
| 6 | Pollie Gautsch | 79 |
| 7 | Christopher J Day | 75 |
| 8 | Daniel M Cislo | 65 |
| 9 | Josh Gerben | 57 |
| 10 | Alex Patel | 56 |
Top Trademark Attorneys — businesses in California, 2010
| # | Attorney | Registrations |
|---|---|---|
| 1 | J Scott Gerien | 90 |
| 2 | Christopher J Day | 86 |
| 3 | Pollie Gautsch | 73 |
| 4 | Xavier Morales | 73 |
| 5 | Alex Patel | 53 |
| 6 | Josh Gerben | 49 |
| 7 | Thomas I Rozsa | 47 |
| 8 | Jason R Lee | 46 |
| 9 | Marc E Hankin | 45 |
| 10 | Matthew H Swyers | 45 |
Top Trademark Attorneys — businesses in California, 2009
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 107 |
| 2 | J Scott Gerien | 94 |
| 3 | Xavier Morales | 90 |
| 4 | Scott W Kelley | 57 |
| 5 | Thomas I Rozsa | 53 |
| 6 | Pollie Gautsch | 50 |
| 7 | John E Russell | 48 |
| 8 | Alex Patel | 47 |
| 9 | Daniel M Cislo | 44 |
| 10 | Kurt Koenig | 44 |
Top Trademark Attorneys — businesses in California, 2008
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 151 |
| 2 | J Scott Gerien | 119 |
| 3 | Alex Patel | 113 |
| 4 | Daniel M Cislo | 84 |
| 5 | Thomas I Rozsa | 74 |
| 6 | Darren S Rimer | 59 |
| 7 | Kit M Stetina | 55 |
| 8 | Tal Grinblat | 52 |
| 9 | Pollie Gautsch | 51 |
| 10 | John E Russell | 49 |
Top Trademark Attorneys — businesses in California, 2007
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 129 |
| 2 | J Scott Gerien | 113 |
| 3 | Alex Patel | 109 |
| 4 | Scott J Fields | 72 |
| 5 | Daniel M Cislo | 71 |
| 6 | Thomas I Rozsa | 64 |
| 7 | Darren S Rimer | 55 |
| 8 | John E Russell | 53 |
| 9 | Richard L Morris | 45 |
| 10 | Kit M Stetina | 43 |
Top Trademark Attorneys — businesses in California, 2006
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 125 |
| 2 | J Scott Gerien | 66 |
| 3 | Kit M Stetina | 52 |
| 4 | Scott W Kelley | 52 |
| 5 | Darren S Rimer | 50 |
| 6 | Thomas I Rozsa | 50 |
| 7 | David W Grace | 45 |
| 8 | Scott J Fields | 45 |
| 9 | Daniel M Cislo | 44 |
| 10 | Donn K Harms | 43 |
Top Trademark Attorneys — businesses in California, 2005
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 100 |
| 2 | Daniel M Cislo | 58 |
| 3 | J Scott Gerien | 58 |
| 4 | Thomas I Rozsa | 48 |
| 5 | Thomas P Philbrick | 39 |
| 6 | Dax Alvarez | 35 |
| 7 | Kit M Stetina | 35 |
| 8 | James Sedivy | 32 |
| 9 | Darren S Rimer | 31 |
| 10 | Scott W Kelley | 30 |
Top Trademark Attorneys — businesses in California, 2004
| # | Attorney | Registrations |
|---|---|---|
| 1 | Christopher J Day | 70 |
| 2 | Daniel M Cislo | 53 |
| 3 | Scott W Kelley | 44 |
| 4 | Stephen J Strauss | 44 |
| 5 | J Scott Gerien | 42 |
| 6 | Michelle L Visser | 42 |
| 7 | Jay H Geller | 36 |
| 8 | Thomas I Rozsa | 34 |
| 9 | Craig O Correll | 32 |
| 10 | Danton K Mak | 32 |
Top Trademark Attorneys — businesses in California, 2003
| # | Attorney | Registrations |
|---|---|---|
| 1 | Richard L Morris | 113 |
| 2 | Scott W Kelley | 56 |
| 3 | Kit M Stetina | 49 |
| 4 | Daniel M Cislo | 46 |
| 5 | Christopher J Day | 45 |
| 6 | J Scott Gerien | 44 |
| 7 | Jill M Pietrini | 39 |
| 8 | Thomas I Rozsa | 34 |
| 9 | Lori N Boatright | 31 |
| 10 | Anne Hiaring | 29 |
Top Trademark Attorneys — businesses in California, 2002
| # | Attorney | Registrations |
|---|---|---|
| 1 | Richard L Morris | 188 |
| 2 | Thomas I Rozsa | 66 |
| 3 | Jill M Pietrini | 59 |
| 4 | Scott W Kelley | 58 |
| 5 | Harold J Milstein | 54 |
| 6 | Christopher J Day | 49 |
| 7 | Kurt Koenig | 48 |
| 8 | Stephen J Strauss | 45 |
| 9 | J Scott Gerien | 44 |
| 10 | Donn K Harms | 43 |
Top Trademark Attorneys — businesses in California, 2001
| # | Attorney | Registrations |
|---|---|---|
| 1 | Thomas I Rozsa | 79 |
| 2 | Jay H Geller | 58 |
| 3 | David W Grace | 39 |
| 4 | Jill M Pietrini | 38 |
| 5 | Donn K Harms | 37 |
| 6 | Allyn Taylor | 36 |
| 7 | Marnie Wright Barnhorst | 35 |
| 8 | Christopher J Day | 32 |
| 9 | Gregory N Owen | 32 |
| 10 | Stephen J Strauss | 32 |
Top Trademark Attorneys — businesses in California, 2000
| # | Attorney | Registrations |
|---|---|---|
| 1 | Thomas I Rozsa | 52 |
| 2 | Jill M Pietrini | 43 |
| 3 | Kit M Stetina | 38 |
| 4 | Anne Hiaring | 37 |
| 5 | Donn K Harms | 37 |
| 6 | Sally M Abel | 37 |
| 7 | Kurt Koenig | 31 |
| 8 | Marnie Wright Barnhorst | 31 |
| 9 | Lori N Boatright | 30 |
| 10 | Theodore J Bielen | 30 |
Top Trademark Attorneys — businesses in California, all years
| # | Attorney | Registrations |
|---|---|---|
| 1 | Raj Abhyanker | 4,014 |
| 2 | Christopher J Day | 2,430 |
| 3 | J Scott Gerien | 2,146 |
| 4 | Pollie Gautsch | 1,417 |
| 5 | Marc E Hankin | 1,372 |
| 6 | Daniel M Cislo | 1,371 |
| 7 | Michael Markos | 1,347 |
| 8 | Matthew H Swyers | 1,257 |
| 9 | Trevor A Caudle | 1,222 |
| 10 | Alex Patel | 1,126 |
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 businesses in California. 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