Registered patent attorney
John Walter Kozak
Firm
Leydig Voit and Mayer LTD
Address
Two Prudential Plaza, Ste. 4900
Chicago, IL, 60601
US
Phone
Registered as
Registered patent attorney
Other attorneys at Leydig Voit and Mayer LTD
- John Boyd ConklinUSPTO Reg. 30369 · Chicago, IL
- Gordon Russell CoonsUSPTO Reg. 20821 · Chicago, IL
- Paul J FilbinUSPTO Reg. 51677 · Chicago, IL
- Bruce M GagalaUSPTO Reg. 28844 · Chicago, IL
- John L GaseUSPTO Reg. 47590 · Walnut Creek, CA
- H Michael HartmannUSPTO Reg. 28423 · Chicago, IL
- Brett Alan HesterbergUSPTO Reg. 31837 · Chicago, IL
- John KilykUSPTO Reg. 30763 · Chicago, IL
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 John Walter Kozak
Is John Walter Kozak a registered patent attorney?
Yes. John Walter Kozak is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 25117). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John Walter Kozak located?
John Walter Kozak's office is in Chicago, Illinois (60601). Affiliated with Leydig Voit and Mayer LTD.
What firm does John Walter Kozak work at?
John Walter Kozak is listed as affiliated with Leydig Voit and Mayer LTD on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact John Walter Kozak?
John Walter Kozak's office phone (per the USPTO public roster) is 312-616-5650. 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.