Patent Attorney
David Mark O'Brian
Reg. No. 37901
Active
Not accepting new clients
Location
Houston, TX 77084
Houston, TX 77084
Phone
281-345-2833
281-345-2833
Registration Type
ATTORNEY
ATTORNEY
Roster
USPTO OED FY25
USPTO OED FY25
Firm and contact info reflects the FY25 roster (last updated September 25).
Attorneys may have changed firms since then — patent filings show their current firm of record.