Top Trademark Attorneys — Colorado
Attorneys with the most trademark registrations to their name for businesses in Colorado, 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 Colorado, 2026
| # | Attorney | Registrations |
|---|---|---|
| 1 | Laura Marmulstein | 34 |
| 2 | Taylor V Williams | 28 |
| 3 | Christopher E Gatewood | 23 |
| 4 | David Ratner | 22 |
| 5 | Caroline E Bryce | 21 |
| 6 | Chase Neely | 17 |
| 7 | Tamara Pester | 17 |
| 8 | Victoria Napolitano | 17 |
| 9 | James Juo | 16 |
| 10 | Jessie L Pellant | 16 |
Top Trademark Attorneys — businesses in Colorado, 2025
| # | Attorney | Registrations |
|---|---|---|
| 1 | Sandy Lipkin | 58 |
| 2 | Christopher E Gatewood | 46 |
| 3 | David Ratner | 40 |
| 4 | Laura Marmulstein | 39 |
| 5 | Jessie L Pellant | 37 |
| 6 | Pamela N Hirschman | 34 |
| 7 | Robin Rossenfeld | 32 |
| 8 | Jeffrey Sturman | 31 |
| 9 | Xinshuo Wang | 30 |
| 10 | Cheryl L Anderson | 29 |
Top Trademark Attorneys — businesses in Colorado, 2024
| # | Attorney | Registrations |
|---|---|---|
| 1 | David Ratner | 45 |
| 2 | H Michael Drumm | 45 |
| 3 | Tamara Pester | 45 |
| 4 | Robin Rossenfeld | 43 |
| 5 | Taylor V Williams | 40 |
| 6 | William J Robers | 38 |
| 7 | Christopher E Gatewood | 31 |
| 8 | Laura Marmulstein | 29 |
| 9 | Shuo Zhang | 27 |
| 10 | Cheryl L Anderson | 23 |
Top Trademark Attorneys — businesses in Colorado, 2023
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jonathan Milgrom | 78 |
| 2 | David Ratner | 56 |
| 3 | H Michael Drumm | 46 |
| 4 | William J Robers | 30 |
| 5 | Charles F Luce | 29 |
| 6 | Henry G Chow | 25 |
| 7 | Caroline E Bryce | 24 |
| 8 | Scott E Brenner | 22 |
| 9 | David S Kerr | 20 |
| 10 | Tamara Pester | 20 |
Top Trademark Attorneys — businesses in Colorado, 2022
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jonathan Milgrom | 87 |
| 2 | David Ratner | 37 |
| 3 | Scott E Brenner | 29 |
| 4 | Henry G Chow | 23 |
| 5 | Jill J Chalmers | 22 |
| 6 | Ellen Reilly | 21 |
| 7 | Eric Sands | 20 |
| 8 | Pamela N Hirschman | 20 |
| 9 | H Michael Drumm | 19 |
| 10 | Jalissa Bauman Horne | 19 |
Top Trademark Attorneys — businesses in Colorado, 2021
| # | Attorney | Registrations |
|---|---|---|
| 1 | Kevin O'Keefe | 116 |
| 2 | Jonathan G Morton | 50 |
| 3 | Weibo Zhang | 43 |
| 4 | H Michael Drumm | 35 |
| 5 | Baya Harrison | 32 |
| 6 | Tamara Pester | 32 |
| 7 | David Ratner | 28 |
| 8 | Jonathan Milgrom | 28 |
| 9 | Scott E Brenner | 25 |
| 10 | Kathy Qi Hao | 22 |
Top Trademark Attorneys — businesses in Colorado, 2020
| # | Attorney | Registrations |
|---|---|---|
| 1 | David Ratner | 51 |
| 2 | Jill J Chalmers | 39 |
| 3 | H Michael Drumm | 36 |
| 4 | Kevin O'Keefe | 33 |
| 5 | Ellen Reilly | 31 |
| 6 | Cheryl L Anderson | 26 |
| 7 | Steve Zemanick | 26 |
| 8 | Jonathan Milgrom | 23 |
| 9 | Steven Weigler | 23 |
| 10 | Pamela N Hirschman | 22 |
Top Trademark Attorneys — businesses in Colorado, 2019
| # | Attorney | Registrations |
|---|---|---|
| 1 | Ellen Reilly | 52 |
| 2 | David Ratner | 40 |
| 3 | H Michael Drumm | 37 |
| 4 | Jill J Chalmers | 31 |
| 5 | Scott S Havlick | 30 |
| 6 | Peter C Lemire | 25 |
| 7 | Carolyn Juarez | 23 |
| 8 | Cheryl L Anderson | 23 |
| 9 | Leigh Augustine | 23 |
| 10 | Pamela N Hirschman | 22 |
Top Trademark Attorneys — businesses in Colorado, 2018
| # | Attorney | Registrations |
|---|---|---|
| 1 | H Michael Drumm | 52 |
| 2 | David Ratner | 44 |
| 3 | Ellen Reilly | 37 |
| 4 | James A Sheridan | 34 |
| 5 | Raj Abhyanker | 32 |
| 6 | Steven Weigler | 29 |
| 7 | Lara Pearson | 23 |
| 8 | Ian L Saffer | 22 |
| 9 | Cheryl L Anderson | 20 |
| 10 | Christopher E Gatewood | 20 |
Top Trademark Attorneys — businesses in Colorado, 2017
| # | Attorney | Registrations |
|---|---|---|
| 1 | H Michael Drumm | 58 |
| 2 | Christopher E Gatewood | 40 |
| 3 | Jill J Chalmers | 39 |
| 4 | Raj Abhyanker | 37 |
| 5 | Cheryl L Anderson | 29 |
| 6 | Ellen Reilly | 28 |
| 7 | Leigh Augustine | 28 |
| 8 | Michael E Broms | 26 |
| 9 | David Ratner | 25 |
| 10 | Ian L Saffer | 24 |
Top Trademark Attorneys — businesses in Colorado, 2016
| # | Attorney | Registrations |
|---|---|---|
| 1 | H Michael Drumm | 43 |
| 2 | Raj Abhyanker | 41 |
| 3 | Leigh Augustine | 32 |
| 4 | Luke Santangelo | 30 |
| 5 | Cheryl L Anderson | 28 |
| 6 | Robert C Bartlett | 27 |
| 7 | Miriam D Trudell | 26 |
| 8 | Ian L Saffer | 25 |
| 9 | Thomas S Birney | 25 |
| 10 | Christopher E Gatewood | 24 |
Top Trademark Attorneys — businesses in Colorado, 2015
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 36 |
| 2 | Raj Abhyanker | 32 |
| 3 | Cheryl L Anderson | 28 |
| 4 | Leigh Augustine | 26 |
| 5 | H Michael Drumm | 25 |
| 6 | Ian L Saffer | 25 |
| 7 | Pamela N Hirschman | 25 |
| 8 | Charles F Luce | 23 |
| 9 | Matthew H Swyers | 22 |
| 10 | Ellen Reilly | 20 |
Top Trademark Attorneys — businesses in Colorado, 2014
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 38 |
| 2 | Raj Abhyanker | 34 |
| 3 | Andrew S Ehard | 27 |
| 4 | Cheryl L Anderson | 27 |
| 5 | H Michael Drumm | 27 |
| 6 | Miriam D Trudell | 25 |
| 7 | Brian Kelly | 24 |
| 8 | Jonathon A Szumny | 23 |
| 9 | Ellen Reilly | 20 |
| 10 | Ian L Saffer | 20 |
Top Trademark Attorneys — businesses in Colorado, 2013
| # | Attorney | Registrations |
|---|---|---|
| 1 | Karen Hays | 63 |
| 2 | Jill J Chalmers | 45 |
| 3 | Pamela N Hirschman | 37 |
| 4 | Matthew H Swyers | 31 |
| 5 | Raj Abhyanker | 27 |
| 6 | Cheryl L Anderson | 22 |
| 7 | Ellen Reilly | 22 |
| 8 | Sabrina C Stavish | 22 |
| 9 | Christopher E Gatewood | 20 |
| 10 | Ian L Saffer | 20 |
Top Trademark Attorneys — businesses in Colorado, 2012
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 43 |
| 2 | Raj Abhyanker | 32 |
| 3 | Matthew H Swyers | 30 |
| 4 | Sabrina C Stavish | 27 |
| 5 | Ian L Saffer | 21 |
| 6 | Jessica Stone Levy | 21 |
| 7 | Luke Santangelo | 20 |
| 8 | Robin Rossenfeld | 20 |
| 9 | Thomas S Birney | 19 |
| 10 | Cheryl L Anderson | 16 |
Top Trademark Attorneys — businesses in Colorado, 2011
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 56 |
| 2 | Ian L Saffer | 24 |
| 3 | Sabrina C Stavish | 23 |
| 4 | Raj Abhyanker | 20 |
| 5 | Scott T Kannady | 19 |
| 6 | Jessica Stone Levy | 17 |
| 7 | Matthew H Swyers | 17 |
| 8 | Michael E Broms | 17 |
| 9 | Mary Joe Weston | 16 |
| 10 | Miriam D Trudell | 16 |
Top Trademark Attorneys — businesses in Colorado, 2010
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 38 |
| 2 | Miriam D Trudell | 24 |
| 3 | Ian L Saffer | 23 |
| 4 | Scott T Kannady | 22 |
| 5 | Sabrina C Stavish | 19 |
| 6 | Brent P Johnson | 15 |
| 7 | Jessica Stone Levy | 13 |
| 8 | Christopher E Gatewood | 12 |
| 9 | John A Leonard | 12 |
| 10 | Liza Meyers | 12 |
Top Trademark Attorneys — businesses in Colorado, 2009
| # | Attorney | Registrations |
|---|---|---|
| 1 | Sabrina C Stavish | 32 |
| 2 | Miriam D Trudell | 30 |
| 3 | Thomas S Birney | 28 |
| 4 | Ian L Saffer | 22 |
| 5 | Jill J Chalmers | 22 |
| 6 | Ellen Reilly | 19 |
| 7 | Ian D Gates | 19 |
| 8 | Andrew Roppel | 17 |
| 9 | Laurie A Rhoades | 14 |
| 10 | Leslie P Kramer | 14 |
Top Trademark Attorneys — businesses in Colorado, 2008
| # | Attorney | Registrations |
|---|---|---|
| 1 | Sabrina C Stavish | 38 |
| 2 | David N Schachter | 33 |
| 3 | Thomas S Birney | 33 |
| 4 | Miriam D Trudell | 32 |
| 5 | Jill J Chalmers | 31 |
| 6 | Craig R Miles | 25 |
| 7 | Scott T Kannady | 25 |
| 8 | Jessica Stone Levy | 19 |
| 9 | Liza Meyers | 19 |
| 10 | Andrew Roppel | 16 |
Top Trademark Attorneys — businesses in Colorado, 2007
| # | Attorney | Registrations |
|---|---|---|
| 1 | Miriam D Trudell | 41 |
| 2 | Jill J Chalmers | 40 |
| 3 | Leslie P Kramer | 34 |
| 4 | Sabrina C Stavish | 30 |
| 5 | David N Schachter | 27 |
| 6 | Harry Melkonian | 25 |
| 7 | Thomas S Birney | 20 |
| 8 | Ian L Saffer | 19 |
| 9 | Daniel J Block | 18 |
| 10 | Robin Rossenfeld | 15 |
Top Trademark Attorneys — businesses in Colorado, 2006
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 27 |
| 2 | Thomas S Birney | 24 |
| 3 | David N Schachter | 23 |
| 4 | Sabrina C Stavish | 23 |
| 5 | Charles F Luce | 18 |
| 6 | Miriam D Trudell | 17 |
| 7 | Renee L Mitchell | 16 |
| 8 | Christopher E Gatewood | 14 |
| 9 | Christopher J Day | 14 |
| 10 | Brent P Johnson | 13 |
Top Trademark Attorneys — businesses in Colorado, 2005
| # | Attorney | Registrations |
|---|---|---|
| 1 | Ian L Saffer | 26 |
| 2 | David N Schachter | 22 |
| 3 | Jill J Chalmers | 22 |
| 4 | Charles F Luce | 18 |
| 5 | Miriam D Trudell | 16 |
| 6 | Sabrina C Stavish | 16 |
| 7 | Scott S Havlick | 12 |
| 8 | K Kalan | 11 |
| 9 | Lisa A Osman | 11 |
| 10 | Christopher E Gatewood | 10 |
Top Trademark Attorneys — businesses in Colorado, 2004
| # | Attorney | Registrations |
|---|---|---|
| 1 | Sabrina C Stavish | 25 |
| 2 | Jill J Chalmers | 22 |
| 3 | Scott S Havlick | 20 |
| 4 | Christopher E Gatewood | 17 |
| 5 | K Kalan | 16 |
| 6 | Ellen Reilly | 15 |
| 7 | Carla W Sledge | 13 |
| 8 | Brent P Johnson | 12 |
| 9 | Daniel J Block | 12 |
| 10 | David N Schachter | 12 |
Top Trademark Attorneys — businesses in Colorado, 2003
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 30 |
| 2 | Sabrina C Stavish | 30 |
| 3 | Leslie P Kramer | 22 |
| 4 | Michael A Lisi | 13 |
| 5 | Thomas S Birney | 13 |
| 6 | Kristine M Miller | 12 |
| 7 | Scott S Havlick | 12 |
| 8 | Adam L Scoville | 11 |
| 9 | John E Reilly | 11 |
| 10 | Anthony P Janik | 10 |
Top Trademark Attorneys — businesses in Colorado, 2002
| # | Attorney | Registrations |
|---|---|---|
| 1 | Sabrina C Stavish | 51 |
| 2 | Miriam D Trudell | 23 |
| 3 | David N Schachter | 18 |
| 4 | Christopher E Gatewood | 15 |
| 5 | Brent P Johnson | 14 |
| 6 | Michael A Lisi | 14 |
| 7 | Scott S Havlick | 14 |
| 8 | Leslie P Kramer | 13 |
| 9 | Nicole Hickey | 13 |
| 10 | Steven B Smith | 13 |
Top Trademark Attorneys — businesses in Colorado, 2001
| # | Attorney | Registrations |
|---|---|---|
| 1 | Thomas S Birney | 19 |
| 2 | Lisa A Osman | 14 |
| 3 | Leslie P Kramer | 13 |
| 4 | Scott S Havlick | 13 |
| 5 | Sabrina C Stavish | 12 |
| 6 | Leslie H Smith | 11 |
| 7 | Rose Ann Sullivan | 11 |
| 8 | Kent H Borges | 10 |
Top Trademark Attorneys — businesses in Colorado, 2000
| # | Attorney | Registrations |
|---|---|---|
| 1 | Sabrina C Stavish | 29 |
| 2 | Miriam D Trudell | 21 |
| 3 | Leslie P Kramer | 16 |
| 4 | Scott S Havlick | 15 |
| 5 | Kent H Borges | 13 |
| 6 | Leslie H Smith | 13 |
| 7 | Rose Ann Sullivan | 12 |
| 8 | Brent P Johnson | 11 |
| 9 | James L Bikoff | 11 |
| 10 | Thomas C Folsom | 11 |
Top Trademark Attorneys — businesses in Colorado, all years
| # | Attorney | Registrations |
|---|---|---|
| 1 | Jill J Chalmers | 714 |
| 2 | Sabrina C Stavish | 555 |
| 3 | H Michael Drumm | 545 |
| 4 | Miriam D Trudell | 511 |
| 5 | David Ratner | 479 |
| 6 | Ellen Reilly | 443 |
| 7 | Christopher E Gatewood | 442 |
| 8 | Ian L Saffer | 428 |
| 9 | Cheryl L Anderson | 385 |
| 10 | Pamela N Hirschman | 364 |
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 Colorado. 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