Registered patent attorney
Mark John Nahnsen
Firm
Barnes & Thornburg LLP
Address
P.O. Box 2786
Chicago, IL, 60690-2786
US
Phone
Registered as
Registered patent attorney
Other attorneys at Barnes & Thornburg LLP
- Bradford Gene AddisonUSPTO Reg. 41486 · Indianapolis, IN
- Daniel P AlbersUSPTO Reg. 44008 · Chicago, IL
- Brian S. AuerbachUSPTO Reg. 72166 · Wilmington, DE
- Rebecca Lynn BallUSPTO Reg. 46535 · Indianapolis, IN
- Shawn D BauerUSPTO Reg. 41603 · Indianapolis, IN
- Christina M. BaughUSPTO Reg. 73040 · Atlanta, GA
- Laryssa M. BedleyUSPTO Reg. 82968 · Chicago, IL
- Jason A. BernsteinUSPTO Reg. 31236 · Atlanta, GA
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 Mark John Nahnsen
Is Mark John Nahnsen a registered patent attorney?
Yes. Mark John Nahnsen is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 51093). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Mark John Nahnsen located?
Mark John Nahnsen's office is in Chicago, Illinois (60690-2786). Affiliated with Barnes & Thornburg LLP.
What firm does Mark John Nahnsen work at?
Mark John Nahnsen is listed as affiliated with Barnes & Thornburg LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Mark John Nahnsen?
Mark John Nahnsen's office phone (per the USPTO public roster) is 312-357-1313. 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.