Registered patent attorney
Vivien Chen Nielsen
Firm
Astellas US LLC
Address
1 Astellas Way
Northbrook, IL, 60026
US
Phone
Registered as
Registered patent attorney
Other attorneys at Astellas US LLC
Other patent attorneys in Northbrook, Illinois
- Heather M BarnesIDEX Corporation
- Keith ChadwickUSPTO Reg. 82970
- Edward J ChalfieEdward Chalfie IP Law, P.C.
- Hsu Heng A ChiAllstate Insurance
- Ashley Taylor CorbittAllstate Insurance Company
- Christian C DamonThe Allstate Corporation
- Kayla S. EpsteinUSPTO Reg. 84407
- James Weston GillesUSPTO Reg. 79558
Frequently asked
Frequently asked about Vivien Chen Nielsen
Is Vivien Chen Nielsen a registered patent attorney?
Yes. Vivien Chen Nielsen is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 62514). Registration is verified against the USPTO Office of Enrollment and Discipline roster.
Where is Vivien Chen Nielsen located?
Vivien Chen Nielsen's office is in Northbrook, Illinois (60026). Affiliated with Astellas US LLC.
What firm does Vivien Chen Nielsen work at?
Vivien Chen Nielsen is listed as affiliated with Astellas US LLC on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Vivien Chen Nielsen?
Vivien Chen Nielsen's office phone (per the USPTO public roster) is 224-205-5225. 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.