what determines how much of a copyright piece can be used without getting permission?

Answer 1

you may find the URL below useful

Answer 2

The idea of a copyright is that no one can use any part of the copyrighted material without permission. Many copyright holders will allow you the use of their material if they are given credit (like the end of movies - they always tell you all the songs they used and where to find them, even if they're not on the soundtrack or only three bars of the song were used in the film), but you still need to ask them first.

There is an exception to this rule, and that is song covers (where one artist recreates in entirety the song of another artist). This is allowed without permission, so long as any published use of the song is credited to the original copyright holder (i.e - Original song written by ____.) This does NOT allow you to sample a song (use part of a song inside a new song) without permission.

And finally, if this question is in reference to a school paper, the answer is that no source can be used without credit, even if it's one sentence. If you try to pass off what you copied as your own work it is called plagiarism. In the college I go to, even if I paraphrase something else I read without giving credit, I can be flunked or expelled. Everything must be cited.

To read U.S. copyright laws (in legal speak) see:
http://en.wikipedia.org/wiki/US_copyright_law

Answer 3

A complex list of factors, under the Fair Use doctrine.

The most common factors include how much of the original work is being copied (total amount, and percentage), the intended use and whether it is commercial (for-profit) or not, and whether the intended use is likely to harm any interests of the original copyright holder.

These factors, and others, are evaluated on a case by case basis. The simplest solution is always to get permission from the source.

Answer 4

Basically there is no law which allows partial infringement of copyright laws!
However, in some places, such infringement is ignored or condoned if it is confined to educational establishments but strictly for educational purpose! But, here again, gross violation, such as photo-copying an entire textbook, is an offence under the C-Laws!
Hope you get a better picture of the issue Priya!
Cheers!

Answer 5

In general the only exception to the necessity of obtaining permission is the "fair use" doctrine which allows use of a quotation, or copy or segment sufficient to illustrate or illuminate some point made by the copier in another published work. "Fair use" depends upon circumstance.

Answer 6

The person who owns the copyright will determine whether to sue you or not.

Answer 7

Generally, it's just the use of a relevant sentance or two. Anything more than that could get you into a copywrite suite.

Answer 8

"fair use" on the radio is generally 15 seconds (if you're talking about songs)

Answer 9

In the end, our amazing court system.

Answer 10

A lot of rules.