I recently obtained additional from the USPTO in response to a FOIA request regarding the 2011 Trademark Litigation Tactics request for comments. These comments include several companies including Intel, several individuals, several attorneys, and several organizations.
Scribd collection: http://www.scribd.com/my_document_collections/3019644
FOIA Response Cover Letter from USPTO: [scribd id=55229659 key=key-h7nsbz6jabi53u2tihp mode=list]
For the original batch of the FOIA documents received from the USPTO, see: http://www.scribd.com/my_document_collections/2936780
For my comments on the USPTO study, see Trademark Litigation Tactics Study to Congress: Hakuna Matata (it means no worries)