Registered patent attorney
Leon David Rosen
Firm
Leon D. Rosen & Associates
Address
10960 Wilshire Blvd Ste 1220
Los Angeles, CA, 90024
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about Leon David Rosen
Is Leon David Rosen a registered patent attorney?
Yes. Leon David Rosen is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 21077). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Leon David Rosen located?
Leon David Rosen's office is in Los Angeles, California (90024). Affiliated with Leon D. Rosen & Associates.
What firm does Leon David Rosen work at?
Leon David Rosen is listed as affiliated with Leon D. Rosen & Associates on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Leon David Rosen?
Leon David Rosen's office phone (per the USPTO public roster) is 310-477-0578. 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.