Registered patent attorney
Robert D Longwell
Firm
Longwell & Associates
Address
P O Box 50064
Palo Alto, CA, 94303-0064
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about Robert D Longwell
Is Robert D Longwell a registered patent attorney?
Yes. Robert D Longwell is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 53236). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Robert D Longwell located?
Robert D Longwell's office is in Palo Alto, California (94303-0064). Affiliated with Longwell & Associates.
What firm does Robert D Longwell work at?
Robert D Longwell is listed as affiliated with Longwell & Associates on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Robert D Longwell?
Robert D Longwell's office phone (per the USPTO public roster) is 650-213-9192. 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.