Registered patent attorney
John A O'Brien
Firm
Law Offices of John A. O'Brien, P.C.
Address
P.O. Box 353
Bridgehampton, NY, 11932
US
Phone
Registered as
Registered patent attorney
Frequently asked
Frequently asked about John A O'Brien
Is John A O'Brien a registered patent attorney?
Yes. John A O'Brien is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 24367). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John A O'Brien located?
John A O'Brien's office is in Bridgehampton, New York (11932). Affiliated with Law Offices of John A. O'Brien, P.C..
What firm does John A O'Brien work at?
John A O'Brien is listed as affiliated with Law Offices of John A. O'Brien, P.C. on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact John A O'Brien?
John A O'Brien's office phone (per the USPTO public roster) is 631-537-6437. Verify availability and intake details directly with the firm before sending privileged materials.
Should I prepare anything before contacting a patent attorney?
Yes — most patent attorneys quote based on a brief. Persoona's intellectual property module generates a prior-art analysis, defensibility scorecard, and a draft USPTO filing package so you arrive with a brief, not a blank slate. Free to run.
Profile sourced from the USPTO OEDCI Practitioner Roster. Persoona did not provide, edit, or curate this data — every field is pulled directly from the public roster.