👉 Invalidity is a legal concept that refers to the inability of an individual or entity to perform certain legal actions due to their age, mental incapacity, or other circumstances. It can be defined as a lack of capacity to understand the nature and consequences of actions they take, making it difficult for them to make decisions or participate in contractual obligations. In many jurisdictions, invalidity is considered a ground for denying a person's rights under the law. This means that an individual who has been found to have