Mega changed their design on their own. It was supposedly to preempt any action from LMT, but there was never an actual threat issued from LMT towards any other designer. I think their "woe, is me" reaction to LMT getting the patent was more of a marketing ploy to sell their new design and get people to forget about their monolithic design. Look at how fast the monolithic upper flew off the shelves afterwards! Excellent business plan put into action on their part. They get to release a new product, and they have zero inventory from the previous product.
The LMT design, especially with their MWS, had nothing in common with the Mega MA-Ten Monolithic upper.
Mega played the "boo-hoo, we're just a small company getting bullied by the big guys" card, and a lot of people bought into it. The fact that Les Baer and LWRCi still have a very successful rifle system shows that there is no threat from LMT.
I don't mean to crap on Mega Arms (I own two) but they are a FAAAAAAAR cry away from being an LMT.