Born in Tomești, Iași County, his parents were Dimitrie Pătrășcanu, a farmer, and his wife, Maria (née Vicol).
He attended primary school in his native village and in Iași, followed by the National College in the latter city.
He formed part of the circle surrounding Viața Românească magazine, to which he began contributing in June 1906, with an article on folk tales.
The co-director of Viața Românească's publishing house and bookstore, he played a key role in the magazine's relaunch in 1920, following World War I.
Pătrășcanu's humorous prose (Schițe și amintiri, 1909; Ce cere publicul de la un deputat și alte schițe, 1912; Timothei mucenicul, 1913; Candidat fără noroc și alte povestiri folositoare, 1916; Înzăpădiți!, 1916; Domnul Nae – Scene din vremea ocupației, 1921; Decorația lui Vartolomei, 1924; Un prânz de gală, 1928) largely revolves around situational comedy, with buffoon-type effects.