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Oak Brook, Illinois

Patent attorneys in Oak Brook

Oak Brook, Illinois is home to 9 USPTO-registered patent practitioners. Working with a local practitioner can streamline in-person meetings for invention disclosures, signing inventor declarations, and reviewing prior-art search results — but every USPTO practitioner is licensed to practice nationally, so a non-local choice is also valid. Local firms with the most USPTO-registered practitioners include Chamberlain Group, CNH Industrial America LLC, and McCracken & Gillen.

Rickard K DeMille

Reg. 58471
Patent attorney

CNH Industrial America LLC

Oak Brook, IL · 60523

630-335-3533

J William Frank· III

Reg. 25626
Patent attorney

McCracken & Gillen

Oak Brook, IL · 60523

630-286-7600

Leonard M Giannone

Reg. 73836
Patent agent

McCracken & Gillen

Oak Brook, IL · 60523

630-286-7600

John M Klempir

Reg. 57615
Patent attorney

Oak Brook, IL · 60523

312-485-1897

Yi Lu

Reg. 84142
Patent attorney

Cherskov Flaynik & Gurda, LLC

Oak Brook, IL · 60523

312-621-1330

William E McCracken

Reg. 30195
Patent attorney

McCracken & Gillen LLC

Oak Brook, IL · 60523

630-286-7600

David R Morris

Reg. 53348
Patent agent

Chamberlain Group

Oak Brook, IL · 60523

630-279-3600

Stephen J Shaw

Reg. 56442
Patent attorney

Chamberlain Group

Oak Brook, IL · 60523

415-857-5999

Soula Skokos

Reg. 55624
Patent attorney

Skokos Law Group, LLC

Oak Brook, IL · 60523

630-368-1699

Common questions

Do patent attorneys in Oak Brook cost more than the national average?
Patent attorney fees vary primarily by experience and complexity of the invention, not by city. A typical provisional patent application in the US runs $1,500 to $5,000; a non-provisional utility filing runs $5,000 to $15,000. Hourly rates in Oak Brook tend to track the broader Illinois legal market.
How many USPTO practitioners list a Oak Brook office?
9 USPTO-registered patent practitioners list a Oak Brook mailing address on the OEDCI roster. You can sort by firm size and contact each directly using the phone numbers shown.
Can I work with a Oak Brook practitioner remotely?
Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A Oak Brook-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.
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