Angolan law lays down a general principle of contractual freedom, which means that parties are mostly free to establish the terms and conditions to be observed by the contracts they enter into (exceptions are made to mandatory rules legally imposed which will depend on the specific contractual relationship) and are entitled to enter into contracts provided for in the law, but also into contracts that are not provided for in the law.
Angolan law does not establish a unitary act or set of rules applicable to all commercial contracts. Depending on the specific contractual relationship, commercial contracts may be subject to the provisions of the Civil Code, Commercial Code, Copyright and Related Rights Law, and the Industrial Property Law as well as other specific legislation.
The aforementioned set of rules changes according to the specific contract in question.