The phrase "was confirmed before" is grammatically correct and can be used in written English.
It means that something was verified or proven to be true before a specific point in time. Example: The results of the experiment were not surprising, as they were confirmed before.
She added that she would resign sooner if a new chairman was confirmed before Nov. 1.
It was on the Granada documentary The Alex Ferguson Story that the United manager's lack of regard for the self-styled "Guv'nor" was confirmed before a 1-1 draw in April 1998 with Liverpool, whom Ince had joined from Internazionale.
As things turned out their elevation was confirmed before kick-off but goals from Peter Lovenkrands and Kevin Nolan applied the gloss to a richly deserved promotion, not to mention nudging Hughton's team another step closer to the Championship title.
Nowhere was the wave of goodwill more keenly felt than at the Kodak Theatre in Los Angeles, where Boyle bounded to the stage when his victory was confirmed, before jumping up and down excitedly on the spot.
Such issues will be addressed at the end of the season; in the meantime Megson and his players plan to enjoy their promotion which, due to Sunderland's earlier failure to defeat Wigan, was confirmed before a ball was kicked at The Hawthorns.
Extent removal of the left frontal tumor was confirmed before surgical site closure (b).
These fees are subject to change and will be confirmed before final agreement with both parties.
But the ban, if it is confirmed before the summer window opens, would make that impossible.
Senate Majority Leader Mitch McConnell immediately asserted again that nobody would be confirmed before the 2016 elections.
Mr. Blitzer thinks a double dip could be confirmed before spring.
Some artists are expected to be confirmed before the Games but others will be held back as a surprise.
