Registered patent agent
David J Chang
Firm
Roche Molecular System, Inc.
Address
4300 Hacienda Drive
Pleasanton, CA, 94588
US
Phone
Registered as
Registered patent agent
Other attorneys at Roche Molecular System, Inc.
Other patent attorneys in Pleasanton, California
- Nabil A AdawiRoche
- Rouzbeh AlaniUSPTO Reg. 72964
- Pamela C AnconaRoche Molecular Systems, Inc.
- Martin Ravash ArastafarVeeva Systems Inc.
- Arthur J BehielSilicon Edge Law Group, LLP
- Jeffrey R. Bolland10x Genomics
- Jan P BrouardCooperVision, Inc.
- Ronald L BurbackUSPTO Reg. 63369
Frequently asked
Frequently asked about David J Chang
Is David J Chang a registered patent attorney?
David J Chang is a registered patent agent (USPTO Registration Number 50374). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is David J Chang located?
David J Chang's office is in Pleasanton, California (94588). Affiliated with Roche Molecular System, Inc..
What firm does David J Chang work at?
David J Chang is listed as affiliated with Roche Molecular System, Inc. on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact David J Chang?
David J Chang's office phone (per the USPTO public roster) is 925-730-8565. 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.