http://www.bbc.co.uk/news/technology-16871075
"The sales ban relates to Motorola's patent for a "method for performing a countdown function during a mobile-originated transfer for a packet radio system".
Motorola licenses the patent to other companies on Frand (fair, reasonable and non-discriminatory) terms.
Frand-type patents involve technologies that are deemed to be part of an industry standard. In this case Motorola's innovation is deemed crucial to the GPRS data transmission standard used by GSM cellular networks across the world.
Companies must offer Frand-type patents for a reasonable fee to anyone willing to pay.
Apple has said it would be willing to pay the fee going forward, but the two firms dispute how much Apple should pay for failing to license the technology up until now. Missed payments are not covered by the "reasonable" rule, and Motorola would be able to demand a more expensive price.
Apple said: "While some iPad and iPhone models are not available through Apple's online store in Germany right now, customers should have no problem finding them at one of our retail stores or an authorised reseller.
"Apple is appealing this ruling because Motorola repeatedly refuses to license this patent to Apple on reasonable terms, despite having declared it an industry standard patent seven years ago."
Motorola said it had offered Apple "reasonable licensing terms and conditions" since 2007.
"We are pleased that the Mannheim court has recognized the importance of our intellectual property and granted an enforceable injunction in Germany against Apple Sales International," a statement said.
Apple's iPhone 3G, iPhone 3GS and iPhone 4 are all affected - but not its newer iPhone 4S. All 3G models of the iPad are involved, but not their wi-fi-only counterparts."