Registered patent attorney
John A Walker
Firm
Crowell and Moring LLP
Address
455 N. Cityfront Plaza Drive
Suite 3600
Chicago, IL, 60611
US
Phone
Registered as
Registered patent attorney
Other attorneys at Crowell and Moring LLP
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 A Walker
Is John A Walker a registered patent attorney?
Yes. John A Walker is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 80872). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is John A Walker located?
John A Walker's office is in Chicago, Illinois (60611). Affiliated with Crowell and Moring LLP.
What firm does John A Walker work at?
John A Walker is listed as affiliated with Crowell and Moring LLP on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact John A Walker?
John A Walker's office phone (per the USPTO public roster) is 312-840-3165. 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.