So here is MVP's patent application for anyone who is interested:
https://www.google.com/patents/US20120322336
Some thoughts (I'm not a patent lawyer but I've followed a few patent cases before):
1. Patents are always very specific. Don't assume that a "general case" is covered. It's only the very specific case(s) described in the patent.
2. This patent hasn't been granted yet and may never be. I think the average time it takes for a patent to be granted (if you're not a BigCo with money to throw at the patent office) is something like 7 years. If it does get granted, its affects will be back-dated to 2011 per the application. There are loads of reasons for a patent not being granted, so we have no idea when/if this will be. Other companies (like Quest) were doing overmolds before MVP and those overmolds may have had different densities (or "specific gravities" as the patent application says).
3. If the patent is granted and MVP chooses to sue, it's very unlikely to actually come to trial like Apple v Samsung. Patent cases nearly always settle fairly early because they are very expensive to litigate. In fact, it's often just a letter from a lawyer followed by some closed-door business negotiations over royalties and done. Latitude may be a big player in the small pond of disc golf, but neither they nor MVP has limitless cash like Apple/Samsung.
4. If there is a suit, Latitude will most likely attempt to either show their discs are different from the patent on some small technicality (see 1 above) or else get the patent itself invalidated based on prior art or other reasons (see 2). If that doesn't work out, they will probably settle and pay royalties (or pay back royalties and then stop producing the discs in question).
Anyway, I hope the patent does get granted, and there are some fireworks. I find it kind of fun to watch companies go at it over this type of thing.