Interestingly, Wisconsin does not appear to define what constitutes the "practice of law" or the "unauthorized practice of law." However, Minnesota clearly (IMO) bars non-attorneys from assisting in the preperation of legal documents, which include patent applications (
EDIT: Of course, non-lawyer patent agents are expressly permitted by federal law to prepare patent applications)
/Edit See below.
As to the use of a draftsperson, many jurisdictions permit non-lawyers to assist in the preparation of legal documents, provided that such non-lawyers are supervised by a licensed attorney who is responsible for their actions. This is how many law students gain experience in the IP field, namely by working for a licensed practitioner who allows them to assist in the preparation of patent applications etc., and hwo ultimately takes responsibility for their actions.
From
https://www.revisor.mn.gov/statutes/?year=2007&id=481.02Minnesota Statutes
481.02 UNAUTHORIZED PRACTICE OF LAW.Subdivision 1. Prohibitions.
It shall be unlawful for any person or association of persons,
except members of the bar of Minnesota admitted and licensed to practice as attorneys at law,
to appear as attorney or counselor at law in any action or proceeding in any court in this state
to maintain, conduct, or defend the same, except personally as a party thereto in other than a
representative capacity, or, by word, sign, letter, or advertisement,
to hold out as competent or
qualified to give legal advice or counsel, or
to prepare legal documents,
or as being engaged
in advising or
counseling in law or acting as attorney or counselor at law, or in furnishing to
others the services of a lawyer or lawyers, or, for a fee or any consideration, to give legal advice
or counsel, perform for or furnish to another legal services, or, for or without a fee or any
consideration, to prepare, directly or through another,for another person, firm, or corporation, any
will or testamentary disposition or instrument of trust serving purposes similar to those of a will,
or, for a fee or any consideration, to prepare for another person, firm, or corporation, any other
legal document, except as provided in subdivision 3.
Of course, I am NOT an expert on legal ethics. Consult with your local bar association for advice.