Registered patent attorney
John Karl Gross
Firm
Leydig, Voit & Mayer Ltd
Address
Two Prudential Plaza
180 North Stetson St., Suite 4900
Chicago, IL, 60601
US
Phone
Registered as
Registered patent attorney
Other attorneys at Leydig, Voit & Mayer Ltd
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 Karl Gross
Is John Karl Gross a registered patent attorney?
Yes. John Karl Gross is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 57108). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John Karl Gross located?
John Karl Gross's office is in Chicago, Illinois (60601). Affiliated with Leydig, Voit & Mayer Ltd.
What firm does John Karl Gross work at?
John Karl Gross is listed as affiliated with Leydig, Voit & Mayer Ltd on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact John Karl Gross?
John Karl Gross's office phone (per the USPTO public roster) is 312-616-5600. 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.