Atos should have waited
Hindsight is 20/20, I know, but in this case Atos jumped the gun and will now be bitten. Somebody did not properly estimate the risks associated with the trial, or perhaps it was deemed preferable to buy the company anyway, use its assets and worry about the trial later.
Well, later is now, and now your acquisition is costing you 25% more.
I hope it was worth it but, since you are a multinational with, apparently, billions in the bank, I won't be too worried either.