Adidas, TaylorMade, Callaway, and Ecco Sued for Golf Shoe Spike Patent Infringement
Many golfers would be surprised by the amount of litigation concerning patents on golf shoe spikes; just check out these prior posts (post 1, post 2). In the latest round of litigation Greenkeepers takes on Adidas, TaylorMade, Callaway, and Ecco. These defendants are in good company in that Acushnet, Softspikes, Nike, and MacNeil Engineering (maker of Champ Spikes) have all also been sued by Greenskeepers.
The entire golf cleat patent infringement Complaint and the patent may be reviewed 
There must be money in the golf spike business!
David Dawsey – Monitoring Litigation in the Golf Industry
PS – click HERE to read about more golf patent litigation