Registered patent agent
Willem G. Klein
Firm
Ratner Presita
Address
1090 Vermont Avenue
Suite 1200
Washington, DC, 20005
US
Phone
Registered as
Registered patent agent
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Frequently asked
Frequently asked about Willem G. Klein
Is Willem G. Klein a registered patent attorney?
Willem G. Klein is a registered patent agent (USPTO Registration Number 79603). Patent agents can prepare and file patent applications but cannot give legal advice on infringement; for legal counsel, look for an attorney.
Where is Willem G. Klein located?
Willem G. Klein's office is in Washington, District of Columbia (20005). Affiliated with Ratner Presita.
What firm does Willem G. Klein work at?
Willem G. Klein is listed as affiliated with Ratner Presita on the USPTO Office of Enrollment and Discipline practitioner roster.
How do I contact Willem G. Klein?
Willem G. Klein's office phone (per the USPTO public roster) is 202-808-7361. 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.