Disc-binding

Sheets can be transferred between disc-bound notebooks of different functions and sizes, provided the discs have the same profile and spacing.

The Feldmans had an agreement with Israeli company Mapal, owner of the Flic brand but lost their distribution rights sometime in late 1995, early 1996.

In April 1996, Mitch Greenberg met Jack Feldman and along with Ed Finkelstein, founded Rollabind, Inc.

The defendants filed a counterclaim alleging that Levenger infringed the patents and misappropriated trade secrets.

After a trial, in September 2007 the court declared the patents invalid and unenforceable, denied most of the other relief that Levenger sought (including refund of royalties Levenger paid under the patent license and reimbursement of its legal fees), and denied defendants' counterclaim.