The most common approach, documented heavily elsewhere, is to delay payment and/or merger by asking their "partner" for a closer look at IP before buying - a very insider's view. A variation is to ask their "partner" for test samples and or blueprints/schematics. Once IP info is obtained, the so-called deal often falls through - not all deals, of course, but many such joint ventures have collapsed. Other approaches include extracting parts/all IP in exchange for access to their vast market. Another approach is to "require" that their own engineers be placed in IP sensitive positions. Another approach is masses of red tape that are only satisfied by IP or related details.

For more deatiled information and evidence, do a simple Google search.

Like I said, I don't want this, but we must be aware. Hence, I would not be surprised.