quia timet

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
QUIA TIMET, remedies. Because he fears. According to Lord Coke, "there be 
six writs of law that may be maintained quia timet, before any molestation, 
distress, or impleading; as. 1. A man may have his writ or mesne, before he 
be distrained. 2. A warrantia chartae, before he be impleaded. 3. A 
monstraverunt, before any distress or vexation. 4. An audita querela, before 
any execution sued. 5. A curia claudenda, before any default of inclosure. 
6. A ne injuste vexes, before any distress or molestation. And those are 
called brevia anticipantia, writs of prevention." Co. Litt. 100 and see 7 
Bro. P. C. 12 5. 
     2. These writs are generally obsolete. In chancery, when it is 
contemplated to prevent an expected injury, a bill quia timet (q.v.) is 
filed. Vide 1 Fonb. 41; 18 Vin Ab. 141; 4 Bouv. Inst. n. 3801, et seq. Bill 
quia timet. 
    

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