Matt Hugo ask....
"Does anyone know the criteria that must be met to successfully obtain a "prescriptive easement" in Michigan?"
Here is a court case that explores some of the elements necessary for perfecting this.
http://caselaw.lp.findlaw.com/script...5C4363&invol=2
Typically adverse claims have a 15 year time fuse in Michigan.
The posters above are giving you good advice in my opinion.
Hope that helps.

