Explain the 'Doctrine of ultra vires’ under the Companies Act, 2013. What are the consequences of 'ultra vires' acts of the company?

Doctrine of ultra vires:\nThe meaning of the term ultra vires is simply “beyond (their) powers”. The legal phrase “ultra vires” is applicable only to acts done in excess of the legal powers of the doers. This presupposes that the powers in their nature are limited. To an ordinary citizen, the law permits whatever does the law not expressly forbid. It is a fundamental rule of Company Law that the objects of a company as stated in its memorandum can be departed from only to the extent permitted by the Act, thus far and no further [Ashbury Railway Company Ltd. vs. Riche].\nIn consequence, any act done or a contract made by the company which travels beyond the powers not only of the directors but also of the company is wholly void and inoperative in law and is therefore not binding on the company. On this account, a company can be restrained from employing its fund for purposes other than those sanctioned by the memorandum. Likewise, it can be restrained from carrying on a trade different from the one it is authorised to carry on.\nConsequences of ‘ultra vires’ acts of the company:\nThe impact of the doctrine of ultra vires is that a company can neither be sued on an ultra vires transaction, nor can it sue on it. Since the memorandum is a “public document”, it is open to public inspection. Therefore, when one deals with a company one is deemed to know about the powers of the company. If in spite of this one enters into a transaction which is ultra vires the company, he/she cannot enforce it against the company.\nAn act which is ultra vires the company being void, cannot be ratified by the shareholders of the company.\nHowever, some ultra vires act can be regularised by ratifying them subsequently. For instance, if the act is ultra vires the power of the directors, the shareholders can ratify it; if it is ultra vires the articles of the company, the company can alter the articles; if the act is within the power of the company but is done irregularly, shareholders can validate such acts.