I was born in Germany. However, we emigrated to the US when I was 7. Subsequently my mother and stepfather became naturalized citizens and I was naturalized under their filing. Is it possible for me to get a German passport?

I was born in Germany. However, we emigrated to the US when I was 7. Subsequently my mother and stepfather became naturalized citizens and I was naturalized under their filing. Is it possible for me to get a German passport?

How was you naturalized under their filing... you can't make the decision to become a US Citizen until your 18th birthday. And you have to do that on your own. Was that in fact done?

In order to retain the German citizenship you need to have a "Beibehaltungsgenehmigung", a certificate allowing you to be naturalized in another country while keeping German citizenship. If you don't have that, you loose German citizenship the moment you are naturalized in another country.
http://en.wikipedia.org/wiki/German_nationality_law#Loss_of_German_citizenship
This is in German:
http://www.germany.info/Vertretung/usa/de/05__Dienstleistungen/02__Staatsangehoerigkeit/02__Beibehaltung/__Beibehaltung.html