Not quite petty litigation but in the same direction... During a flight back from the US my bag got mangled by
Lufthansa and was left with a sharp bit of plastic sticking out the side of it a few millimetres. While changing to the U-bahn at Marienplatz some stupid bitch, about 30 years old, pushed past me onto the train while I was struggling with my bags and the sharp edge got caught in her trouser turn-ups. She went mad at me for this affront to her rights to barge onto the train before I'd got off and grabbed hold of my shoulder trying to hold me, pointing to the minute and normally invisible hole the snag had made, asking for my haftpflichtversicherung details so she could make a claim. After a 9 hour flight home and an argument with Lufthansa I was in no mood to suffer a pointless bint like her, told her to fuck off, wrenched myself free and carried on. She gave up the chase, perhaps sensing my somewhat less than charitable reading of the situation.
In my experience Germans, with all their petty insurances, do seem to be a mindless-litigous bunch, although this seems to be spreading everywhere.