Registered patent attorney
Charles Francis O'Brien
Firm
Cantor Colburn LLP
Address
20 Church Street
22nd Floor
Hartford, CT, 06103
US
Phone
Registered as
Registered patent attorney
Other attorneys at Cantor Colburn LLP
- Leroy R. AshleyUSPTO Reg. 83950 · Hartford, CT
- Eric J BaronUSPTO Reg. 56025 · Hartford, CT
- Joseph BarreraUSPTO Reg. 44522 · Hartford, CT
- Asaf BatelmanUSPTO Reg. 52600 · Alexandria, VA
- Christine Wilkes BeninatiUSPTO Reg. 37967 · Hartford, CT
- Amy J Bizon-CoppUSPTO Reg. 53993 · Hartford, CT
- Michael H BrodowskiUSPTO Reg. 41640 · Hartford, CT
- Samantha Stephanie BurchUSPTO Reg. 66570 · Troy, MI
Other patent attorneys in Hartford, Connecticut
- Caroline B. AhnTravelers
- James Michael AlburgerMcCarter & English, LLP
- Alexander E. AndrewsAlix, Yale & Ristas, LLP
- David ArnoldCantor Colburn LLp
- Ethel-Mina Naa Deede AryeeUniversity of Connecticut School of Law
- Anne Davis BarryCantor Colburn, LLp
- Nadav Eliyahu BattatUniversity of Connecticut School of Law
- Matthew J BeckerAxinn, Veltrop & Harkrider, LLP
Frequently asked
Frequently asked about Charles Francis O'Brien
Is Charles Francis O'Brien a registered patent attorney?
Yes. Charles Francis O'Brien is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 47314). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Charles Francis O'Brien located?
Charles Francis O'Brien's office is in Hartford, Connecticut (06103). Affiliated with Cantor Colburn LLP.
What firm does Charles Francis O'Brien work at?
Charles Francis O'Brien is listed as affiliated with Cantor Colburn LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Charles Francis O'Brien?
Charles Francis O'Brien's office phone (per the USPTO public roster) is 860-286-2929. 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.