A German condom manufacturer has run into legal trouble with a claim that a packet of seven of its products "corresponds to up to 21 orgasms."

Berlin company Einhorn asked a state court in Duesseldorf Tuesday to overturn an injunction obtained by a German rival, Fair Squared, barring it from using the claim on packaging.

Lawyers for Einhorn argued that the slogan was obviously a joke but judges indicated they weren't minded to budge, news agency dpa reported.

Presiding Judge Johanna Brueckner-Hofmann said the slogan is "suited to deception" and could tempt people to use the condoms several times. She said "that is why we banned this."

Brueckner-Hofmann said condoms are medical products and their packaging subject to "particularly strict requirements."

The court will announce its decision on Nov. 26.