I saw this movie on TV when I was young (maybe 12) and thought it was one of the best movies ever, but for the life of me I can not remember what it was called.
So after some fruitless searching of the web with 'sword fight movie court' as my search criteria I ended up here (not a bad place to be I might add) with the hope that the below very basic description might send of a light in someones head.
It was black and white ( i think, but i maybe wrong)
It was generally about some guy who watched his father die in a sword fight, then knowing he couldn't beat the guy went on to train in fencing. It turns out the guy who killed his Dad was a member of the court and so each day, that the court was on, this guy (now not a bad fencer) would go into court and challenge him to a duel. Everyday however this old Dad killer was not there, so the son would give him a bit of verbal trash talk (everyone in the court would laugh) and he'd go home (I presume) and return the next day to do it all again.
That's about all i have... reading that it seems very vague but you can but ask sometimes or be cursed to scroll the google results in the hope that something, however unlikely, jumps out.