He is mentioned in the Mathura lion capital. He is also mentioned in the Taxila copper plate inscription (Konow 1929: 23-29), dated between 90 and 6 BCE. In the scroll Patika is said to be the son of the Satrap of Chuksa, Liaka Kusuluka.
Zeionises (Jihonika) may have succeeded Patika around 20–40 CE.
- From the dated inscription on the Rukhana reliquary
- An Inscribed Silver Buddhist Reliquary of the Time of King Kharaosta and Prince Indravarman, Richard Salomon, Journal of the American Oriental Society, Vol. 116, No. 3 (Jul. - Sep., 1996), pp. 442 
- A Kharosthī Reliquary Inscription of the Time of the Apraca Prince Visnuvarma, by Richard Salomon, South Asian Studies 11 1995, Pages 27-32, Published online: 09 Aug 2010