The U.S. Copyright Office maintains an index of fair use lawsuits.  They recently sent out a reminder about the index, reproduced below.  Definitely worth checking out.

One year
ago, the U.S. Register of Copyrights, in coordination with the U.S.
Intellectual Property Enforcement Coordinator, announced the launch of the U.S.
Copyright Office’s Fair Use Index
(“Index”).  The Index makes the principles and application of fair
use more accessible and understandable to the public by providing a basic explanation of
fair use as well as presenting a regularly updated searchable database
of summaries of major fair use decisions.  So far, over 180 U.S. fair use
decisions have been summarized, spanning every appellate jurisdiction and many
categories of use, from music to digitization to parody.

In the
past year, the Fair Use Index has received tens of thousands of page views and
has led to thousands of downloads of the Copyright Office’s case summaries.
These include more than 1,000 downloads for each of the following summaries: 

Rosen v.
eBay, Inc. (2015)Katz v.
Google Inc. (2015)Cambridge
Univ. Press v. Patton (2014)Fox News
Network, LLC v. TVEyes, Inc. (2015)Fox
Broad. Co. v. Dish Network, LLC (2015)Kienitz
v. Sconnie Nation, LLC (2014)

The Fair
Use Index is not a substitute for legal advice, but is a helpful starting point
for those seeking to better understand how courts across the country have
applied the fair use doctrine to a variety of fact patterns. The Index is
updated periodically.
The Fair
Use Index may be accessed on the Copyright Office’s website at http://copyright.gov/fair-use/index.html.