Just as simple as the title sounds. The Germans invaded Poland on Sept. 1st and engaged most of their army, then Sept. 17th Russia invaded it's eastern boarder, sacking multiple towns and murdering thousands of civilians by hand.
I suspect you already know the answer, which is "no". Who would bring Josef Stalin or Vyacheslav Molotov to court? Whose authority could trump that of the USSR's? Perhaps only the UN, which the Soviets had a veto in. The postwar communist Poles sanctioned the invasion once they took power, and voluntarily agreed to surrender all claims to the lands seized by the Soviets (they argued in favour of surrendering those lands as early as the 1920s, so they were being consistent). As such, even assuming the absurdity of the Soviets being willing to participate, Poland wouldn't have an interest or legal basis for challenging the invasion. And by the time the Cold War was over and the communist Poles were out of power (which is the only point that such decisions could conceivably have been challenged), anyone bearing any meaningful responsibility was dead (Molotov died in '86).