Yes, you can patent a food preservation method. A food preservation method is a process for preserving food and patentable as a utility patent.You can fill out the paperwork online without an attorney if you wish. A food patent is a type of utility patent that covers edible products and foodrelated processes and compositions. A provisional patent form can be submitted fairly quickly (however long it takes to fill out the form). It lasts for one year. Customer. A stepbystep overview of a patent application and maintenance process. Getting a patent can help protect your products or designs and ensures that others cannot make your products without your permission. Getting a patent can help protect your products or designs and ensures that others cannot make your products without your permission. The answer is yes, they can.