Preliminary injunction writ's purpose to protect, preserve rights, interests

A writ of preliminary injunction, as an ancillary or preventive remedy, may only be resorted to by a litigant to protect or preserve his rights or interests and for no other purpose during the pendency of the principal action. But before a writ of preliminary injunction may be issued, there must be a clear showing by the complaint that there exists a right to be protected and that the acts against which the writ is to be directed are violative of the said right. [G.R. No. 121158. December 5, 1996]