Number of Challenges by Year, Reason, Initiator & Institution (1990 - 2010)
These figures are pulled from our Challenge Database, which currently has 10,676 challenges on record. You will notice that if you add up the numbers of challenges by reason or initiator, the total will be greater than 10,676. This is because many challenges have multiple reasons or initiators. Please contact the Office for Intellectual Freedom (800-545-2433, ext. 4220; email@example.com) if you have any questions regarding the graphs below.
Challenges by Year
Challenges by Reason
Challenges by Initiator
Challenges by Institution