A U.S. Judge has ruled that Samsung does infringe on Apple’s patents with its Galaxy line of Android-based tablets, but stopped short of issuing a preliminary injunction against the devices. Reuters reports that U.S. District Judge Lucy Koh said that while Apple must show that Samsung infringed its patents, it must also prove that its patents are valid under the law. Koh said she would deny an injunction based on one of Apple’s “utility”…