(1) A restraint of trade is valid to the extent to which it is not against public policy, whether it is in severable terms or not.
(2) Subsection (1) does not affect the invalidity of a restraint of trade by reason of any matter other than public policy.
(3) Where, on application by a person subject to the restraint, it appears to the Supreme Court that a restraint of trade is, as regards its application to the applicant, against public policy to any extent by reason of, or partly by reason of, a manifest failure by a person who created or joined in creating the restraint to attempt to make the restraint a reasonable restraint, the Court, having regard to the circumstances in which the restraint was created, may, on such terms as the Court thinks fit, order that the restraint be, as regards its application to the applicant, altogether invalid or valid to such extent only (not exceeding the extent to which the restraint is not against public policy) as the Court thinks fit and any such order shall, notwithstanding sub-section (1), have effect on and from such date (not being a date earlier than the date on which the order was made) as is specified in the order.
(4) Where, under the rules of an association, a person who is a member of the association is subject to a restraint of trade, the association shall, for the purposes of subsection (3), be deemed to have created or joined in creating the restraint.
(5) An order under subsection (3) does not affect any right (including any right to damages) accrued before the date the order takes effect.
15 The relevant principles governing validity and reasonableness of restraints of trade were helpfully summarised in Cactus Imaging Pty Ltd v Peters [2006] NSWSC 717 by Brereton J:
"[10] Although at common law a restraint of trade is contrary to public policy and void unless it is justified by the special circumstances of the particular case (for which purpose it is sufficient justification that the restriction is reasonable having regard to the interests of the parties concerned and in reference to the interests of the public, so that while affording adequate protection to the party in whose favour it is imposed, it is not injurious to the public) [ Nordenfelt v Maxim Nordenfelt Guns & Ammunition [1894] AC 535 at 565; Herbert Morris Ltd v Saxelby [1916] 1 AC 688 at 706 and 707; Lindner v Murdock's Garage (1950) 83 CLR 628 at 653], in New South Wales a restraint is valid to the extent to which it is not against public policy, even if not in severable terms [ Restraints of Trade Act , 1976 (NSW) s 4(1); Koops Martin Financial Services Pty Ltd v Reeves [2006] NSWSC 449, [26]-[27]]. The effect of the Restraints of Trade Act is that, in New South Wales, one approaches this type of case by determining, first, whether the alleged breach (independently of public policy considerations) does or will infringe the terms of the restraint properly construed; secondly, whether the restraint in its application to that breach is against public policy; and thirdly, if it is not, then in its application to the alleged infringing conduct, the restraint is valid unless the court makes an order under Restraints of Trade Act, s 4(3) [ Orton v Melman [1981] 1 NSWLR 583; Woolworths Ltd v Olson [2004] NSWCA 372, [42]]. That is because the effect of the Restraints of Trade Act , s 4(1), is to require that, for the purpose of determining the validity of a restraint, attention be focussed on the actual or apprehended breach, rather than on imaginary or potential breaches.