Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pā̆trōnātus, ūs, m. [patrocinor], the character and condition of a patron, patronship, patronage (late Lat.; cf. patrocinium), Inscr. Murat. 564, 1: jus patronatus, the sum of the rights of a patron over his freedman, Dig. 37, tit. 14 (v Sandars ad Just. Inst. 1, 5, 3): omni commodo patronatus carere, Dig. 37, 14, 3: amissi patronatus jus recipere, ib. 21