No, it isn't. That just sounds silly. It's not possible to invent idioms in this way. The only sue/pants idiom that exists is "sue the pants off someone", as in "I'll sue the pants off you". This follows the same pattern as similar colourful idioms such as "Scare the xx out of someone" or "Beat the xx out of someone". Note that the rules of informal language are just as strict as those of formal language. Please don't think that you can make up expressions at random.

Gonna revive this to chime in that the other commenters are wrong and yes, it IS an idiom that is used - albeit regionally. It is commonly understood in Singaporean / Malaysian English.

No. I've never heard this used. If you've invented it, it isn't a good invention--it doesn't sound natural. "I will sue you" sounds very serious. The more simple and straightforward it is, the more it sounds as if you are really going to do it. "I'll see you in court" is an informal, unpleasant way to say it.

You can say "I will sue your arse off" - at least in Australia. It's slang and swearing, but it is close (I think) to what you are trying to say.