Registered patent attorney
William J Cass
Firm
William J. Cass
Address
6 Wintergreen Circle
Southwick, MA, 01077
US
Phone
Registered as
Registered patent attorney
Frequently asked
Frequently asked about William J Cass
Is William J Cass a registered patent attorney?
Yes. William J Cass is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 41659). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is William J Cass located?
William J Cass's office is in Southwick, Massachusetts (01077). Affiliated with William J. Cass.
What firm does William J Cass work at?
William J Cass is listed as affiliated with William J. Cass on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact William J Cass?
William J Cass's office phone (per the USPTO public roster) is 860-306-0208. 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.