Registered patent attorney
Brian D Johnston
Firm
Caldwell Cassady & Curry PC
Address
2121 N. Pearl St., Ste. 1200
Dallas, TX, 75201
US
Phone
Registered as
Registered patent attorney
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- Rayan M. Al-AssaadSlater & Matsil, L.L.P.
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Frequently asked
Frequently asked about Brian D Johnston
Is Brian D Johnston a registered patent attorney?
Yes. Brian D Johnston is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 69041). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Brian D Johnston located?
Brian D Johnston's office is in Dallas, Texas (75201). Affiliated with Caldwell Cassady & Curry PC.
What firm does Brian D Johnston work at?
Brian D Johnston is listed as affiliated with Caldwell Cassady & Curry PC on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Brian D Johnston?
Brian D Johnston's office phone (per the USPTO public roster) is 214-888-4971. 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.