Registered patent attorney
Kenneth H Sonnenfeld
Firm
Ballard Spahr LLP
Address
1675 Broadway
New York, NY, 10019
US
Phone
Registered as
Registered patent attorney
Other attorneys at Ballard Spahr LLP
- Erin E. BlasbergUSPTO Reg. 82174 · Atlanta, GA
- Caryn C Borg-BreenUSPTO Reg. 52637 · Philadelphia, PA
- Darjush M BoushehriUSPTO Reg. 73139 · Atlanta, GA
- Margaret B BrivanlouUSPTO Reg. 40922 · New York, NY
- Kyle Andrew CeuninckUSPTO Reg. 75379 · Atlanta, FL
- John A ChionchioUSPTO Reg. 40954 · Philadelphia, PA
- David J ChoUSPTO Reg. 48078 · Washington DC, DC
- Rebecca J. ConwayUSPTO Reg. 84248 · Philadelphia, PA
Other patent attorneys in New York, New York
- Ghalia AamerColumbia Law School
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- Ahmed B AbdelqaderFish and Richardson P.C.
- Gary AbelevHunton Andrews Kurth LLP
- Samuel B AbramsDechert LLP
- Bruce D. AbramsonBruce Abramson
- Ronald AbramsonListon Abramson LLP
- Peter A AbruzzeseKramer Levin Naftalis & Frankel LLP
Frequently asked
Frequently asked about Kenneth H Sonnenfeld
Is Kenneth H Sonnenfeld a registered patent attorney?
Yes. Kenneth H Sonnenfeld is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 33285). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Kenneth H Sonnenfeld located?
Kenneth H Sonnenfeld's office is in New York, New York (10019). Affiliated with Ballard Spahr LLP.
What firm does Kenneth H Sonnenfeld work at?
Kenneth H Sonnenfeld is listed as affiliated with Ballard Spahr LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Kenneth H Sonnenfeld?
Kenneth H Sonnenfeld's office phone (per the USPTO public roster) is 646-346-8050. 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.