53. Avoidance of certain restrictive conditions

in the case of a contract for supply, to require the person supplied to acquire from the supplier, or his nominee, or prohibit him from acquiring from any specified person, or from acquiring except from the supplier or his nominee, anything other than the patented product;

in the case of a licence to work a patented invention, to require the licensee to acquire from the licensor or his nominee, or prohibit him from acquiring from any specified person, or from acquiring except from the licensor or his nominee, anything other than the product which is the patented invention or (if it is a process)

in either case, to prohibit the person supplied or the licensee from using articles (whether patented products or not) which are not supplied by, or any patented process which does not belong to, the supplier or licensor, or his nominee, or to restrict the right of the person supplied or the licensee to use any such articles or process.

at the time of the making of the contract or granting of the licence, the supplier or licensor was willing to supply the product, or grant a licence to work the invention, as the case may be, to the person supplied or the licensee, on reasonable terms specified in the

the person supplied or the licensee is entitled under the contract or licence to relieve himself of his liability to observe the condition or term on giving to the other party 3 months’ notice in writing, and subject to payment to that other party of such compensation (being, in the case of a contract to supply, a lump sum or rent for the residue of the term of the contract and, in the case of a licence, a royalty for the residue of the term of the licence) as may be determined by an arbitrator appointed by the Attorney General.