"A covenant not to compete contained in a contract for personal services will be enforced if it is reasonable, based on all the circumstances."
An "anti-raiding" restrictive covenant is “only reasonable, and thus enforceable, if it is (1) necessary to protect a legitimate business interest, (2) reasonably limited in time and space, and (3) consonant with the public interest.”
A restrictive covenant runs with the land, affecting successive owners. It will not cease to be enforceable just because it was created a long time ago. However, the covenant may be unenforceable for another reason. For example, where the seller failed to observe the relevant registration formalities.
An NDA constitutes a legally binding agreement, albeit without the same level of scrutiny as a non-compete clause. It solely restricts the use of information rather than overall competition. Typically, the agreement will specify that the employer is entitled to injunctive relief in the event of a breach.
Conditions or restrictions, unlimited as to time, by which the title or use of real property is affected, shall be limited to the term of thirty years after the date of the deed or other instrument or the date of the probate of the will creating them, except in cases of gifts or devises for public, charitable or ...