Apple’s aggressive litigation strategy against Android vendors over the past year has seen precious little return considering the huge investment it reportedly requires, and on Friday. Feb 3, things took another turn south for the Cupertino, California-based technology giant, BGR.com reports.

A court in Germany has issued a permanent injunction against the iPhone 4, iPhone 3GS, iPhone 3G and iPad 2 Wi-Fi + 3G, upholding a ruling issued in December.

Online sales of the phones have been banned in the country, and Apple has removed the devices from its German website. All iPhone models and iPad 2 models are still available for sale at local retailers, the report says, citing FOSS Patents.

The ban is the result of a patent complaint filed against Apple by Motorola in Germany, claiming Apple’s iOS devices with embedded 3G connectivity infringe a Motorola patent related to UMTS technology. Earlier this month, Motorola filed a new complaint in Germany targeting Apple’s latest smartphone, the iPhone 4S.