Registered patent attorney
John J Marshall
Address
67 Daniel Drive
Avondale, PA, 19311
US
Phone
Registered as
Registered patent attorney
Other patent attorneys in Avondale, Pennsylvania
Browse all Avondale patent attorneys →Frequently asked
Frequently asked about John J Marshall
Is John J Marshall a registered patent attorney?
Yes. John J Marshall is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 29671). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John J Marshall located?
John J Marshall's office is in Avondale, Pennsylvania (19311).
How do I contact John J Marshall?
John J Marshall's office phone (per the USPTO public roster) is 484-720-8260. 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.