The Minnesota Cottage Food Law allows for individuals to make and sell certain non-potentially hazardous food and canned goods in Minnesota without a license. Officially file your request for a food patent.No, it is generally not possible for someone to patent the process of making bread. The main reasons are: 1. MN Lawyer Referral shares everything you need to know if you are looking to submit for a patent. For more info regarding laws on patents, call today! Yes, you can patent a food preservation method. A food preservation method is a process for preserving food and patentable as a utility patent. This trademark classification information should be filled out on line 4 of the state trademark application form. The Pro Se Assistance Program is dedicated to help independent inventors and small businesses meet their goal of protecting valuable intellectual property.