Registered patent attorney
John C McMahon
Address
P.O. Box 860305
Shawnee, KS, 66286
US
Phone
Registered as
Registered patent attorney
Frequently asked
Frequently asked about John C McMahon
Is John C McMahon a registered patent attorney?
Yes. John C McMahon is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 29415). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John C McMahon located?
John C McMahon's office is in Shawnee, Kansas (66286).
How do I contact John C McMahon?
John C McMahon's office phone (per the USPTO public roster) is 913-422-5222. 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.