Registered patent attorney
Ya-Fen Chen
Firm
JAS Law, LLP
Address
710 Lakeway Drive
Suite 138
Sunnyvale, CA, 94085
US
Phone
Registered as
Registered patent attorney
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Frequently asked
Frequently asked about Ya-Fen Chen
Is Ya-Fen Chen a registered patent attorney?
Yes. Ya-Fen Chen is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 51553). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Ya-Fen Chen located?
Ya-Fen Chen's office is in Sunnyvale, California (94085). Affiliated with JAS Law, LLP.
What firm does Ya-Fen Chen work at?
Ya-Fen Chen is listed as affiliated with JAS Law, LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Ya-Fen Chen?
Ya-Fen Chen's office phone (per the USPTO public roster) is 408-900-8900. 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.