grmg.pl:
1)
No. Worst thing that maybe/probably/teoretically can hapen is that they will additionaly register trademark and after that we must to change name. But registering trademark cost money, it is long road (6 months?) and it is not sure that they will obtain it.
No, completely wrong.
Because the question is wrong.
There is no "law".
There are many various laws in various countries.
USA patents and other intellectual slavery are winning in USA and EU, they can sue you anything even for using bullets in game.
And using anything similar to Tremulous increases problems.
But.
This is stupid.
Until more reasonable laws are passed (maybe when EU communism and USA fascism collapses finally), you should just lawyer up and ignore stupid haters, imo.
And I guess use other name, that one we can do.