Re: Is there a way to pull software product license keys and activation status?

I have not but most key are scrambled in the registry and you have to apply the "formula" which will not work unless your going to apply the math afterwards. Not sure if that is hard requirement. RecoverKey or MagicJellyBean do the math for you if require that information. Activation status for the OS only.

http://social.technet.microsoft.com/wiki/contents/articles/5675.determine-windows-activation-status-with-powershell.aspx

Other vendors are going to be unique in how they capture that data.