ZIP 57109
Patent attorneys in ZIP code 57109 · South Dakota
ZIP code 57109 in South Dakota has 4 USPTO-registered patent practitioners listed at addresses inside the ZIP. Every practitioner shown holds an active license to practice before the US Patent and Trademark Office. Local offices include Kaufhold & Dix Patent Law and Maximilian R Peterson.
All practitioners
Brendan B Dix
Reg. 37313Patent attorney
Kaufhold & Dix Patent Law
Sioux Falls, SD · 57109
605-334-1571
Malissa C. Eng
Reg. 70911Patent attorney
Kaufhold & Dix Patent Law
Sioux Falls, SD · 57109
605-334-1571
Sean A Kaufhold
Reg. 46820Patent attorney
Sioux Falls, SD · 57109
605-334-1571
Maximilian R Peterson
Reg. 46469Patent attorney
Maximilian R Peterson
Sioux Falls, SD · 57109
605-789-7800
Common questions
Do patent attorneys in ZIP 57109 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 ZIP 57109 tend to track the broader South Dakota legal market.
How many USPTO practitioners list a ZIP 57109 office?
4 USPTO-registered patent practitioners list a ZIP 57109 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 ZIP 57109 practitioner remotely?
Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A ZIP 57109-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.