Registered patent attorney
Marion D Hefner
Firm
Leydig Voit and Mayer, Ltd.
Address
Two Prudential Plaza
Suite 4900
Chicago, IL, 60601
US
Phone
Registered as
Registered patent attorney
Other attorneys at Leydig Voit and Mayer, Ltd.
- Gregory C BaysUSPTO Reg. 40505 · Chicago, IL
- Jeffrey B BurganUSPTO Reg. 35463 · Chicago, IL
- Wallace H. FengUSPTO Reg. 78304 · Chicago, IL
- Mark JoyUSPTO Reg. 35562 · Chicago, IL
- Steven P PetersenUSPTO Reg. 32927 · Chicago, IL
- Xavier PillaiUSPTO Reg. 39799 · Chicago, IL
- Steven H SklarUSPTO Reg. 42154 · Chicago, IL
- Kenneth P SpinaUSPTO Reg. 43927 · 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 Marion D Hefner
Is Marion D Hefner a registered patent attorney?
Yes. Marion D Hefner is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 41826). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Marion D Hefner located?
Marion D Hefner's office is in Chicago, Illinois (60601). Affiliated with Leydig Voit and Mayer, Ltd..
What firm does Marion D Hefner work at?
Marion D Hefner is listed as affiliated with Leydig Voit and Mayer, Ltd. on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Marion D Hefner?
Marion D Hefner'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.