What are the key elements that should be included in a cofounder agreement?

It's not necessary but it can be a really good idea. You'll want to address things like the equity split, vesting schedule, each cofounder's contributions (cash, IP, time, etc.), how much time each cofounder will be expected to spend (and if someone is starting out part-time, when they are expected to go full-time), and you may want to address consequences for failing to meet the required contributions and time - for example, company can claw back shares at original price and expel the cofounder.

The answer depends upon how you define protected or confidential information under your NDA. Even if pricing is included as protected information, often pricing becomes "excluded" from the NDA protection because the "pricing" has been made public to other third parties. You are often better protected by having a pricing methodology and ensuring that such is protected under the NDA.

Hi - what does the contract say? We are looking for the choice of law clause. If the contract provides for NY choice of law then fantastic! You hire an attorney in New York, send them a demand letter and file in a New York State Court - on the day after the expiration date for your letter. Once you get your judgment in New York, you hire a collections attorney in Montana to go collect your judgement (if they won't pay up - its amazing how much they are willing to pay when you get a local lawyer to put a lien on their house!) If the choice of law clause says Montana - you can (i) be certain and hire a lawyer in Montana and follow the same process or (ii) be aggressive, hire and file in New York, just to ensure that they have to hire a New York lawyer to get the case dismissed. The second situation would be if you think they would rather settle with you than pay someone in New York to get the case dismissed. There is a lot of strategy to consider - but the most important thing in any of this is to be decisive and move forward with a lawyer quickly once you decide on a course of action. I've seen clients who had stronger cases lose in the end because the other side was aggressive in Court and had their lawyer on a retainer immediately and filed before my client could finish "considering her options."

You can submit your request as a bid on the contracts counsel platform. My firm with many artists and art galleries.

You need someone who will attempt to settle the matter for you and if that fails be prepared to sue on the note and take the necessary action to collect. This assumes the debtor has assets to collect against. It can take a while. I have had some folks pay relatively promptly, others several years. Communication between attorney and client is very important in this process. If you have no idea what is going on in your case you can get very anxious. I make sure you get consulted on each development and you get copies of each filing.