The phrase "might have informed" is correct and usable in written English.
You can use it to indicate that something did not occur but could have happened had the relevant information been made available. For example, "I might have informed my boss about the issue had I known sooner."
Revelations like that might have informed him that no system, scientific or otherwise, would change the essential nature of man.
Fixated on what he sees as the jealous motives of his critics, he misses the important truths about our economy and the reality of people's lives that might have informed his agenda.
Those figures might have informed Brown that the Pistons could overcome a huge game from O'Neal; the Lakers are 0-2 when O'Neal has reached 30 points in the playoffs.
You might have informed readers that Quorn's packages claim that its key ingredient is " mushroom in origin".
Here are two examples where more robust identification might have informed readers.
The amendments would exempt all "deliberative materials" from disclosure under the public records law, protecting anything that might have informed a policy decision.
'Have you ever - you know...'. a scene from Cuckoos Beatrice: You know, I would have thought that if you had even the slightest inkling that this might happen you could have informed me.
Individuals being aware of their country's organ donation policy could be endogenous to willingness to donate as those who are willing to donate might also be more likely to have informed themselves enough to make the donation decision or are simply more likely to want to learn about the topic.
Because we have informed ourselves.
We have informed police authorities.
Your family may have informed them beforehand.
