Potential patent issues

[BlazingWhitester]

I spotted some patents that can theaten current DMD implementation.
Wanted to clarify things.

http://www.freepatentsonline.com/6185728.pdf - this patent describes 
method pointers implementation (delegates)
http://www.freepatentsonline.com/5628016.pdf - describes compiler 
support for SEH, also this is the reason GNU toolchain does not support 
SEH right now

Both patents were owned by Borland, right now, I believe Microsoft owns them.

Walter, could you give some comments about this? Does dmd violate anything?