Because attorneys need not apply for registration to practice trademark law before the USPTO, the USPTO does not maintain a roster of trademark attorneys. The names of attorneys who specialize in trademark law may be found in the telephone yellow pages, or by contacting a local bar association. Most state bar websites offer a searchable online registry of their attorneys, and many bar associations operate attorney referral service programs. The USPTO cannot aid in the selection or recommendation of an attorney. You may also consider the services of the Law School Clinic Certification program.
For information about practitioners who have been disciplined for violations of the USPTO Rules of Professional Conduct, or its predecessor, the USPTO Code of Professional Responsibility, search OED Final Decisions in the FOIA Reading Room.
The Commissioner for Trademarks possesses the authority to exclude a person from serving as an attorney, correspondent, signatory, or domestic representative in trademark matters before the USPTO, when appropriate. You can view show-cause orders and exclusion orders issued by the Commissioner for Trademarks.