Bandai Namco registered two trademarks in Europe for aten Kaitos. The trademarks cover Baten Kaitos Origins and Baten Kaitos Eternal Wings and the Lost Ocean.
Although the trademarks could be standard renewals it would be amazing if the series was actually revived.
What is also interesting is that Baten Kaitos Eternal Wings and the Lost Ocean was never released in Europe which is where these trademarks have been registered.
About Baten Kaitos series
The Baten Kaitos series takes place in a world where humanity lives on a series of island-nations in the sky. These islands are the last livable remnants of a poisoned Earth that was devastated a thousand years ago in the War of The Gods.
The residents of the sky however are prosperous having been aided by various advantages, including Wings of the Heart- the manifestation of the human spirit in the form of usable wings-, Magic, Magnus- a technology that allows the essence of an item to be stored within small card-like objects-, and Machina- mechanical technology.
Their way of life however is in danger as the ancient Gods power begin to return and threaten the world.
