Whether § 312a BGB, in the version in force until 10 June 2010, is compatible with the German Basic Law.
The court referred the constitutional question to the Federal Constitutional Court, identifying a possible unequal treatment of consumers in doorstep transactions involving instalment delivery contracts.
The court's headnote states that consumers in doorstep transactions structured as instalment delivery contracts may be disadvantaged in the required cancellation notice compared with consumers concluding cash transactions, contrary to the general equality principle in Article 3 GG.