Media Company Discovery Communications has filed a lawsuit against Amazon, claiming the Kindle infringes on a patent Discovery has for DRM on electronic book technology.

The lawsuit, filed on Tuesday in U.S. District Court in Delaware, alleges infringement of a patent filed by the company in September of 1999. Describing an Electronic Book Security and Copyright Protection System, the patent was awarded in 2007, with Discovery founder John S. Hendricks listed among the inventors.

Meanwhile, Amazon introduced the Kindle, along with its e-book store, in November 2007 -- the same month Discovery received its patent.

Below is the complaint filed by Discovery, which includes the patent it says Amazon violated:

discovery-communications-complaint - Free Legal Forms