What is the court procedure that involves proving a will to be valid or invalid?

The court procedure that involves proving a will to be valid or invalid is known as probate. This process is essential because it allows the court to determine the authenticity of the will, ensuring that it reflects the true intentions of the deceased regarding the distribution of their assets. During probate, the court will review the will's validity, witness testimonies may be heard, and any challenges to the will can be addressed. This legal framework is crucial for resolving disputes that may arise among heirs or other interested parties and for facilitating the orderly transfer of the decedent’s properties in accordance with their wishes.

Other terms, while related to legal processes, do not specifically refer to the validation of wills. Litigation refers more generally to the process of taking legal action, which may or may not involve wills. Testamentary refers to matters related to wills and estates but doesn't pertain directly to the court procedure itself. Adjudication refers to the legal process of resolving a dispute, which can occur in a variety of contexts beyond just wills and estates.