From the U.S. Copyright Office:
The U.S. Copyright Office is conducting a study to evaluate the operation of the ISP safe harbor provisions of section 512 of title 17 and has reviewed public input from the first round of written comments and from roundtable participation. You may access the comments and a transcript of the roundtables on the Copyright Office website here.
To further aid the analysis, the Copyright Office is now soliciting additional written comments on a subset of issues. These include questions relating to the characteristics of the current Internet ecosystem, operation of the current DMCA safe harbor system, potential future evolution of the DMCA safe harbor system, and other developments relevant to this study. The Copyright Office is also seeking submissions of empirical research on any topics that are likely to provide useful data to assess and/or improve the operation of section 512.
You may access the Federal Register notice here. Written comments are to be submitted electronically using the regulations.gov system. Specific instructions for submitting comments are available on the Copyright Office website at copyright.gov/policy/section512/commentsubmission/.Comments must be received no later than 11:59 p.m. Eastern Time on February 6, 2017. Empirical research studies must be received no later than 11:59 p.m. Eastern Time on March 8, 2017.