Registered patent attorney
Keith S Van Duyne
Firm
Ladas & Parry LLP
Address
224 South Michigan Ave., Suite 1600
Chicago, IL, 60604
US
Phone
Registered as
Registered patent attorney
Other attorneys at Ladas & Parry LLP
- David C BrezinaUSPTO Reg. 34128 · Chicago, IL
- Janet I CordUSPTO Reg. 33778 · New York, NY
- Michael Alexander CornmanUSPTO Reg. 20672 · New York, NY
- Raymond A Di PernaUSPTO Reg. 44063 · New York, NY
- Douglas G GallagherUSPTO Reg. 57783 · Chicago, IL
- Frank GaoUSPTO Reg. 62565 · Chicago, IL
- Young Seok KooUSPTO Reg. 76255 · Los Angeles, CA
- Jacqueline G LendvaiUSPTO Reg. 77269 · Los Angeles, CA
Other patent attorneys in Chicago, Illinois
- Lawrence H AaronsonMcDonnell Boehnen Hulbert & Berghoff LLP
- Dennis J AbdelnourHonigman LLP
- Holby Matthew AbernNeal, Gerber & Eisenberg LLP
- Cassandra L. AbernathyUSPTO Reg. 75330
- John AbramicSteptoe & Johnson LLP
- David Brian AbramowitzLocke Lord LLP
- Hugh A AbramsShook, Hardy & Bacon LLP
- Matthias AbrellMarshall Gerstein & Borun, LLP
Frequently asked
Frequently asked about Keith S Van Duyne
Is Keith S Van Duyne a registered patent attorney?
Yes. Keith S Van Duyne is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 54505). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Keith S Van Duyne located?
Keith S Van Duyne's office is in Chicago, Illinois (60604). Affiliated with Ladas & Parry LLP.
What firm does Keith S Van Duyne work at?
Keith S Van Duyne is listed as affiliated with Ladas & Parry LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Keith S Van Duyne?
Keith S Van Duyne's office phone (per the USPTO public roster) is 312-427-1300. 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.