You can't have a copyright on titles, but imagine if Transformers wasn't a 30-year-old trademarked brand and the film from 2007 was a completely original work - if someone then went out and made a film called Transformers about transforming, warring robots, they'd then get sued. So, The Asylum made Transmorphers.
I see someone mentioned hack Roland Emmerich's 10,000 BC disasterpiece, well The Asylum did 10,000,000 BC. Now imagine how many people were duped by that.
And to the person who said it looked like "another big budget movie", that couldn't be further from the truth - they churn these indepedent movies out with extremely little money.