Registered patent agent
Charles O. Busch
Firm
McDonnell Boehnen Hulbert & Berghoff LLP
Address
300 S Wacker Drive
Chicago, IL, 60606
US
Phone
Registered as
Registered patent agent
Other attorneys at McDonnell Boehnen Hulbert & Berghoff LLP
- Lawrence H AaronsonUSPTO Reg. 35818 · Chicago, IL
- Jeffrey D. AndersonUSPTO Reg. 51403 · Chicago, IL
- Paul H BerghoffUSPTO Reg. 30243 · Chicago, IL
- Isadora F. BielskyUSPTO Reg. 60748 · Chicago, IL
- Daniel A BoehnenUSPTO Reg. 28399 · Chicago, IL
- Michael S. BorellaUSPTO Reg. 62361 · Chicago, IL
- Joshua D BosmanUSPTO Reg. 70335 · Chicago, IL
- Christopher D ButtsUSPTO Reg. 67558 · Chicago, IL
Other patent attorneys in Chicago, Illinois
- 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
- Rachel M. AckermanGreer, Burns & Crain, Ltd
Frequently asked
Frequently asked about Charles O. Busch
Is Charles O. Busch a registered patent attorney?
Charles O. Busch is a registered patent agent (USPTO Registration Number 84443). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Charles O. Busch located?
Charles O. Busch's office is in Chicago, Illinois (60606). Affiliated with McDonnell Boehnen Hulbert & Berghoff LLP.
What firm does Charles O. Busch work at?
Charles O. Busch is listed as affiliated with McDonnell Boehnen Hulbert & Berghoff LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Charles O. Busch?
Charles O. Busch's office phone (per the USPTO public roster) is 312-913-2113. 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.