There seems to be some storm on around the Arduino ecoystem. Arduino v. Arduino posting at Hackaday seems to indicate that there are two Arduno companies that are disagreement: Arduino LLC is suing Arduino Srl (the Italian version of an LLC).
Arduino LLC is the company founded by Massimo Banzi, David Cuartielles, David Mellis, Tom Igoe and Gianluca Martino in 2009 and is the owner of the Arduino trademark. It gave us the Arduino board designs, software, and community support that’s gotten the Arduino where it is. This company has the original arduino.cc web site. Arduino.cc has recently poured quite a bit more work into the software lately (released version 1.6.0). Banzi and the other three have wanted to internationalize the brand and license production to other firms freely according to original Arduino’s Open Source Hardware credentials. The Arduino AtHeart program is designed for makers and companies wishing to make their products easily recognisable as based on the Arduino technology (you pay a small license fee for right to use Arduino name).
The original Arduino boards you can buy were manufactured by a spinoff company, Smart Projects Srl, founded by the same Gianluca Martino. Things got ugly in November when [Martino] and new CEO [Federico Musto] renamed Smart Projects to Arduino Srl, registered arduino.org, keep all production themselves in Italy and finally list the company on the stock market. Looks like Arduino.org forked the software a couple months ago.
So, Arduino finally got on the I-hate-the-arduino-bandwagon to start suing itself huh? Get ready for the Arduino wars. If this goes to court probably everyone loses – except the lawyers.