Angelina no company can sue you for defamation of character or the like
Of course they can. That is how the game is played. As a big company you know you will most likely not win in the end. But still they can (and often do) sue just to wear the other side out, both financially and emotionally.
For you a lot depends on the outcome, because you have to invest a lot of money to fight off that case and constantly find time to consult with your lawyer etc. For the big company, the legal department handles things and the money that is at risk if they loose is negligible. That's exactly why they do it and why many ordinary people give up eventually and do not go all the way through the court levels.