Registered patent attorney
John P Costello
Firm
Costello Law Corporation
Address
2267 Lava Ridge Court
Suite 210
Roseville, CA, 95661
US
Phone
Registered as
Registered patent attorney
Other patent attorneys in Roseville, California
- Douglas P BrosnanUSPTO Reg. 54616
- Milton Frederick CusterHexcel Corporation
- Richard V De GruccioUSPTO Reg. 50898
- Bradley Paul HeislerHeisler & Associates
- Peter T HoltHolt Law Firm
- Paul P VestalUSPTO Reg. 73635
- Steven Ray YountUSPTO Reg. 43692
Frequently asked
Frequently asked about John P Costello
Is John P Costello a registered patent attorney?
Yes. John P Costello is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 36110). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John P Costello located?
John P Costello's office is in Roseville, California (95661). Affiliated with Costello Law Corporation.
What firm does John P Costello work at?
John P Costello is listed as affiliated with Costello Law Corporation on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact John P Costello?
John P Costello's office phone (per the USPTO public roster) is 916-441-2234. 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.