Well, the balloons used by Google in this project are stolen according to Space Data Corporation.
The company says that Google has stolen their balloon based technology.
Google says it is using own manufacturing facility and automated systems to deliver a balloons in the air.
However, Space Data Corporation alleged that is false and the balloon technology belongs to them.
The two systems use weather balloons to carry radio transceivers 60,000 and 100,000 feet in the air.
These meetings were covered with a non disclosure agreement.
Negotiations of a partnership between Google and Space Data Corporation apparently failed at that time,reportsThe Stack.
The original PDF document of the original filing can be accessedhere.
source: www.techworm.net