Warsaw: UEFA on Sunday announced that it would take action against the German and Portuguese football associations after their Euro 2012 opening match in Lviv, Ukraine.
"The German Football Association (DFB) is charged with the throwing of missiles by their supporters, while the Portuguese Football Federation (FPF) faces proceedings for a delayed kick-off to the second half," European football's governing body said.
"The UEFA Control and Disciplinary Body will deal with the case on Thursday 14 June.
Germany, one of the favourites to challenge holders Spain for the European crown, won the match on Saturday 1-0 with a goal from Mario Gomez.
They are not the first to be held to account by UEFA.
On Saturday UEFA announced it had initiated proceedings against the Russian football federation after the country's fans lit and threw fireworks and displayed potentially inflammatory "Russian Empire" flags at Friday's game with the Czech Republic.
It also said it was investigating claims from a racism monitoring body that the Czech's Theo Gebre Selassie, who is black, was subjected to monkey chants during the game, which Russia won 4-1.
A police investigation has been launched separately into an attack on four volunteer stadium stewards after the match.