“43. The Supreme Court Practice 1995 published by Sweet & Maxwell in paragraphs 18/19/33 (p.344) explains the phrase “abuse of the process of the court” thus:
“This term connotes that the process of the court must be used bona fide and properly and must not be abused. The court will prevent improper use of its machinery and will in a proper case, summarily prevent its machinery from being used as a means of vexation and oppression in the process of litigation. … The categories of conduct rendering a claim frivolous, vexatious or an abuse of process are not closed but depend on all the relevant circumstances. And for this purpose considerations of public policy and the interests of justice may be very material.”
44. One of the examples cited as an abuse of the process of the court is relitigation. It is an abuse of the process of the court and contrary to justice and public policy for a party to relitigate the same issue which has already been tried and decided earlier against him. The reagitation may or may not be barred as res judicata. But if the same issue is sought to be reagitated, it also amounts to an abuse of the process of the court. A proceeding being filed for a collateral purpose, or a spurious claim being made in litigation may also in a given set of facts amount to an abuse of the court. Frivolous or vexatious proceedings may also amount to an abuse of the process of the court especially where the proceedings are absolutely groundless. The court then has the power to stop such proceedings summarily and prevent the time of the public and the court from being wasted. Undoubtedly, it is a matter of the court's discretion whether such proceedings should be stopped or not; and this discretion has to be exercised with circumspection. It is a jurisdiction which should be sparingly exercised, and exercised only in special cases. The court should also be satisfied that there is no chance of the suit succeeding.”
K.K. Modi v. K.N. Modi & Ors., (1998) 3 SCC 573