Instruct: Given a premise, retrieve a hypothesis that is entailed by the premise.
Query: Thereafter, in 1831, 1909, 1976, and 1998, and in numerous private copyright bills and temporary extensions of the copyright law and in repeated patent law revisions, Congress extended the terms of Federal copyright and patent protection of subsisting works.
The terms of Federal copyright  have been extended more than 3 times
The copyright clause includes music
The unlimited time can be extended after ten years.
This bill has been ratified several times.
Petitioners submit such a blanket extension of existing terms exceeds Congress's power under the Copyright Clause and it get along with  the First Amendment
extension extends to all subsisting works.
Copyright infringement is an issue for older products.
the difference between a copyright that lasts 100 years or last 1000 years is probably about two glasses of wine
The copyright clause has a range of applications 
Ancient legislation frequently makes provision.
The Copyright Clause has limits in originality that the court has determined have meaning.
If Congress legislates prospectively then the extension will affect many people
New work copyright needs to go through the patent office.
an unlimited time would violate the Copyright Clause, leading to anger
Their employment lasted decades.
The Framers copyright is restrictive and has rules as to what can be used.
The problem with the extension only extending to subsisting copyrights is the only issue with it at the moment.
in 2 separate years terms were extended unevenly
copyrights never lose their value
No copyright lasts forever.
The issue was going on for 10 years
The court feels the same way about copyright laws as it did 50 years ago.
Congress extended the terms of Federal copyright and patent protection of subsisting works in a single bill after 1998.

Congress extended the terms of Federal copyright in a patent law revision in 2001
The terms of Federal copyright were not extended prior to the 19th century.