Registered patent attorney
William J Campbell
Firm
William J. Campbell, Esq.
Address
3830 Oceanic Drive
Suite 403
Oceanside, CA, 92056
US
Phone
Registered as
Registered patent attorney
Other patent attorneys in Oceanside, California
- Cy J BatesCoastal Patent Law Group, PC
- Tiffany M BaughmanUSPTO Reg. 57587
- Don EricksonLaw Office
- Matthew GerpheideUSPTO Reg. 79304
- Daniel T HamlingUSPTO Reg. 71466
- Richard Thomas ItoNitto Denko Technical Corporation
- Erik P JohnsonDoubloon Diagnostic Consulting
- N Paul KlaasUSPTO Reg. 25733
Frequently asked
Frequently asked about William J Campbell
Is William J Campbell a registered patent attorney?
Yes. William J Campbell is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 73953). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is William J Campbell located?
William J Campbell's office is in Oceanside, California (92056). Affiliated with William J. Campbell, Esq..
What firm does William J Campbell work at?
William J Campbell is listed as affiliated with William J. Campbell, Esq. on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact William J Campbell?
William J Campbell's office phone (per the USPTO public roster) is 805-501-3104. 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.