Samsung was dealt another blow in its ongoing patent battle with Apple as a court in Germany has upheld a ruling barring sales of its Galaxy Tab 10.1 tablet in the country. Reuters reports that a higher regional court in Duesseldorf, Germany, said that Samsung may not sell the older version of the 10.1 in Germany. Samsung redesigned the Galaxy Tab 10.1 for the German market only and named it Galaxy Tab 10.1N to get around the sales ban; Apple subsequently…