GTC Biotherapeutics (fka GTCB)

[used to make chicken]

The majority of the IP was either trade secret or assimilations of licensed technologies. The decision to go that route was prompted by the cost and length of time it took to get the initial promoter patent issued. That patent, I believe, reverted to Michigan State where it was developed, and then licensed exclusively to the inventor and founder of Geneworks. The vectors were licensed from Cellgenesys. I assume the birds are long gone, including a small (at the time) flock of birds producing a multi-billion dollar off-patent product.

I didn't want to retire, anyway. : )