Answer:
The four factors judges consider are:
1. the purpose and character of your use
2. the nature of the copyrighted work
3. the amount and substantiality of the portion taken
4. the effect of the use upon the potential market.
duration of protection least 60-70 years
and original idea of works (not copied or influenced by others)
The idea came out first then the similar format( ex: Coke came out before Pepsi both has a similar idea of soda/drinks)
"Copyright" literally means the right to copy but has come to mean that body of exclusive rights granted by law to copyright owners for protection of their work.
Step-by-step explanation: