According to the O/U, ALL Paper Cups and Plates are acceptable for use on Pesach without a special Kosher for Pesach certification for both hot and cold foods.

Pas Yisroel during Aseres Yimei Teshuva
אלול — Guidance for Aseres Yimei Teshuva: Pas Akum, Pas Yisroel, and Rosh Hashana By Rabbi Eliezer Eidlitz Main Ideas During Aseres Yimei Teshuva, the