Registered patent agent
Alexander B. Castanares
Firm
YHE Law LLP
Address
3559 Mt. Diablo Blvd
Suite 195
Lafayette, CA, 94549
US
Phone
Registered as
Registered patent agent
Other attorneys at YHE Law LLP
Other patent attorneys in Lafayette, California
- Daniel Benjamin BorsonBorson Law Group, PC
- Eric L. FongUSPTO Reg. 66886
- Philip A GirardGirard & Equitz LLP
- Dennis P HaistUSPTO Reg. 55240
- Jaime B HerrenDoyle Low LLP
- Anthony P JonesPark, Vaughan, Fleming & Dowler LLP
- Gabriel Patrick KralikGawfco Enterprises, Inc.
- Martin Frank MajesticUSPTO Reg. 25695
Frequently asked
Frequently asked about Alexander B. Castanares
Is Alexander B. Castanares a registered patent attorney?
Alexander B. Castanares is a registered patent agent (USPTO Registration Number 80022). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Alexander B. Castanares located?
Alexander B. Castanares's office is in Lafayette, California (94549). Affiliated with YHE Law LLP.
What firm does Alexander B. Castanares work at?
Alexander B. Castanares is listed as affiliated with YHE Law LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Alexander B. Castanares?
Alexander B. Castanares's office phone (per the USPTO public roster) is 415-612-9636. 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.