Do you mean stasis (status in Latin)? If it is the case, stasis doctrine was used to classify or define the kind of judicial case in order to find the proper arguments to defend it.
Indeed, as Luisa Isabel tells, it is stasis. Four issues are distinguished. Formulated somewhat losely: did the claimed act indeed happen? Is the act correctly qualified? Can the agent indeed be held responsible? And is the one giving these judgments qualified to give them? In criminal law these issues are formally codified. If you want to find an entrance to read more, go to my favorite website about (classical) rhetoric: sival rhetoricae: http://rhetoric.byu.edu/
A good resource to investigate the origins or roots (Greek) of words is www.etymonline.com. Accordingly, Statis or status means to stand, basically, in a court of law. If you mean stasis, this is from etymoline: "stoppage of circulation," 1745, from medical Latin, from Greek stasis "a standing still, a standing; the posture of standing; a position, a point of the compass; position, state, or condition of anything;" also "a party, a company, a sect," especially one for seditious purposes; related to statos "placed," verbal adjective of histemi "cause to stand," from PIE root *sta- "to stand" (see stet).stat (n.)
In Aristotle's Rhetoric, stasis was a discovery procedure that involved asking a series of questions to determine the point at issue. The questions involved fact, definition, quality, and jurisdiction.
Stasis and Kairos: Principles of Social Construction in Classical Rhetoric (1988) by Michael Carter is a "classical" article. I hope you'll be able to get it.