Yes. A DBA is a fictitious name for as business. It stands for 'doing business as' and you can sue them. You may have to include the name of the owner as well.
You can file a lawsuit.
get an attorney! and you have to have a good reson to file a lawsuit and have a good lawyer
The lawsuit can be listed as either DBA or LLC. You do need to respond, otherwise you might be faced with a default judgment.
Yes, it is legally possible to file a lawsuit against any federal agency.
you can file a lawsuit against someone for practically anything.
In the US, a minor cannot file a lawsuit against anyone at all. BUT! if the child is awarded emancipation then they may sue for cause.
yes
Can you file a lawsuit against a university that initially accepted you into a program and the day before the semester started they dropp you after you have paid?
File a lawsuit against that person.
see a lawyer
Yes, and many should be sued, too.
You may be able to file a slander lawsuit against a teacher if she was talking about you in public. You would need to contact an attorney in your area.