Things You'll Need
Petition in civil or small claims court
Review the promissory note to ensure that the obligation is due and owing.
Draft a demand letter to the person who signed the promissory note. Through the communication, set forth the payment requirements included in the promissory note itself. Because the debt under the promissory note is mature, demand immediate payment in your letter.
Deliver the demand letter to the person obligated through the promissory note. Consider either hand-delivering the letter to him or send it via U.S. Mail, return receipt requested. Ultimately, you may need to document that you made demand for payment of the promissory note.
Write and send a follow up letter to the person who signed the promissory note if you do not receive a payment or reach some sort
of settlement within a couple of weeks after sending your initial communication. Provide him with a set amount of time---one week, for example---to make full payment for the promissory note or you will file suit.
Obtain from the appropriate court a form petition to use in filing suit to obtain what is due under the promissory note. Depending on the dollar amount at issue, the suit is brought either in small claims court or the regular civil court. The amount that is claimed in small claims court varies from state to state. The clerk of the court maintains information to assist you in filing in the proper court.
Complete the petition.
File the petition with the clerk of the court, commencing your small claims or civil suit against the person obligated to you through the promissory note.