Registered patent attorney
Charles P Litchfield
Address
1000 4th Street
Suite 800
San Rafael, CA, 94901
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about Charles P Litchfield
Is Charles P Litchfield a registered patent attorney?
Yes. Charles P Litchfield is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 68913). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Charles P Litchfield located?
Charles P Litchfield's office is in San Rafael, California (94901).
How do I contact Charles P Litchfield?
Charles P Litchfield's office phone (per the USPTO public roster) is 415-526-6333. 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.