Using someone else's signature in order to increase the value of property (such as forging an autograph). Whoever, with intent to injure or defraud, does any of the following is guilty of forgery and may be sentenced to imprisonment for not more than three years.If you're facing forgery charges, contact our proficient Forgery Charges lawyer in Minneapolis, MN for proper legal defense. But a forgery can also be committed if it involves artwork, antiques or stamps and currency. Using a check from an inaccessible, nonexistent, closed, or frozen account also qualifies as check forgery. Crime defined; intent to defraud. Minnesota particularly frowns on offering evidence at trial that you know to be fake. Sub-categories of Forgery.