Update: Swatch Group Ends Partnership with Tiffany

The Atlas Chronograph watch in 2009, one of the first watches created by Tiffany Watch Co. Ltd.

Updated at 2 p.m. with a statement from Tiffany & Co. disputing the claims of the Swatch Group. See below.

In a terse statement Monday, the Swatch Group said it will end its partnership with Tiffany & Co. to make and distribute branded watches for the luxury jeweler and will seek compensation for