Assumed Names/Co-Partnerships

COVID-19 Information

Updated 11/18/2020 - Due to the current epidemic, to reduce the spread of Coronavirus, and to protect the safety of the public and our staff, the Oakland County Clerks Office is open by appointment only for urgent matters. We strongly encourage you to utilize our online or by-mail options. Please note, appointments are limited. See below for options in performing each service and read the corresponding web page carefully on how to proceed:

Appointments/Notice to callers

  • We are experiencing high call volumes. Phones are being answered between 8:30 a.m. and 4:30 p.m. For questions relating to the Vital Records Office, call 248-858-0571.
  • You may also contact us with questions at
  • For questions regarding Concealed Pistol Licenses, contact us at
  • Due to the epidemic, appointments are limited to NEW Concealed Pistol Licenses (CPL) only. If your matter is urgent and you are not able to make an appointment online, you may call our office at 248-858-0571.

Schedule Appointment

Please reserve appointments for urgent matters only, and consider an online or by-mail option instead, to protect the safety of all.

Business name searches and registrations for Assumed Names and Co-Partnerships are available through the Oakland County Clerk's Office. 

  • An Assumed Name consists of one or more parties.  It is more binding since all parties listed must sign the documents in front of a notary public and no changes can be made without the signatures of all parties involved.
  • A Co-Partnership consists of two or more parties and may be dissolved or changed by the signature of any party.

The Oakland County Clerk's Office is required to ensure that the business name you are seeking is not being used as an Assumed Name or Co-Partnership within Oakland County. You may apply in person at the Vital Records office or by mail. Two searches are available - free online search of Oakland County business name records and the state of Michigan to find out if your business name has been filed as a corporation before filing with our office.

How to File / Register

You may first search the online business name search above for availability of a name.  Please note that final approval of a business name is the decision of the Oakland County Clerk's Office.

Each business name is valid for 5 years, subject to renewal.

We are prohibited by law from accepting a name for filing that is the same as or similar to another name already on file.  Keep in mind that spelling variations may exist.

Assumed Name Certificate and Instructions
Discontinuance of an Assumed Name
Assumed Name - Address Change/Legal Name Change
Assumed Name - Out of State Consent
Co-Partnership Certificate and Instructions
Discontinuance of a Co-Partnership

Certificates may be submitted in person or by mail. You must include a stamped, self-addressed envelope.
For additional Assumed Name or Co-Partnership information, call 248-858-0569.

Additional Resources

County Business Center

Small Business Association

Corporations & Non-Profits