Sunpoop; here is some points from PROCEDURE 101...Lol...Lol...

5th Amendment applies in "Criminal" cases. It proscribes "self Incrimination...

There is no 5th Amendment in refusing to comply with "Discovery" matters in all other cases...

And the Subpeona cannot be issued by "YOU"...

If you have "Filed" a case, your attorney can issue the Subpeona to seek any information that he/she deems relevant to the prosecution of the case...

Parties served with Subpeona have a righ to file a Motion to quash that Subpeona on various grounds, And such Motions are decided by the Court...

Distilling your point from your posts; you are right. DM must have a strategy to serve his Subpoena's on DMG. One way or the other, he feels that the "Discovery" he seeks is "Relevant" and productive as a strategy in VIVITAR case. Otherwise he would be wasting time on a "Fishing Expedition" against a third party...

Gil...