Registered patent attorney
William H CalnanIV
Address
3 Esquire Road
Norwalk, CT, 06851
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about William H Calnan
Is William H Calnan a registered patent attorney?
Yes. William H Calnan is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 29520). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is William H Calnan located?
William H Calnan's office is in Norwalk, Connecticut (06851).
How do I contact William H Calnan?
William H Calnan's office phone (per the USPTO public roster) is 203-847-3308. 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.