A more thorough explanation:

A copartner is an investor in a partnership. This means that they contribute money or property to a business that is owned and operated by two or more people. According to the Uniform Partnership Act, if a person receives a share of the profits of a business, they are generally considered to be a partner in that business.

For example, if two friends decide to start a business together and one friend invests $10,000 while the other friend invests $5,000, they are both copartners in the business. They will share in the profits and losses of the business, and they will both have a say in how the business is run.

Copartners can play different roles in a limited liability company (LLC) or limited liability partnership (LLP). In an LLC, copartners have stronger liability protection, which means that they are not personally responsible for the debts of the business. In an LLP, copartners may have to take personal responsibility for the debts of the business, but only to the extent of their own negligence.

For example, if a copartner in an LLP is sued for negligence, they may be personally responsible for any damages awarded to the plaintiff. However, if another copartner was responsible for the negligence, the first copartner would not be held personally responsible for the damages.

Overall, copartners are important investors in partnerships who share in the profits and losses of a business. They may have different levels of liability protection depending on the type of partnership they are involved in.