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Temporary suspension of contractual obligations and rights

This doctrine does not operate to completely extinguish the original rights of the parties accruing from the contract. It only provides for the suspension of such right, which can subsequently be revived after a certain event or time. In Tool Metal Manufacturing v Tungsten, The courts held that generally promissory estoppel will merely suspend legal rights rather than extinguish them. However, where periodic payments are involved and a promise has been made to reduce the payments because of pressing circumstances which are not likely to persist, promissory estoppel can be used to extinguish legal rights. This final limitation to the scope of estoppel operates in the sense that the doctrine applies to representations relating to past and present events only by excluding the future events executory promise. However, promissory estoppel may permanently extinguish the rights of the promisor to claim lump sum after part-payment. In D & C Builders Ltd v Rees, Lord Denning expressed that the: