Registered patent attorney

John D Winkelman

USPTO Reg. 26523

Address

13750 SW Latigo Cir

Beaverton, OR, 97008

US

Phone

Registered as

Registered patent attorney

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Frequently asked

Frequently asked about John D Winkelman

  • Is John D Winkelman a registered patent attorney?

    Yes. John D Winkelman is a registered patent attorney with the United States Patent and Trademark Office (USPTO Registration Number 26523). Registration is verified against the USPTO Office of Enrollment and Discipline roster.

  • Where is John D Winkelman located?

    John D Winkelman's office is in Beaverton, Oregon (97008).

  • How do I contact John D Winkelman?

    John D Winkelman's office phone (per the USPTO public roster) is 503-524-5822. 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.

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