UPDATE: 2/12/14, 4:10 p.m. EST. The names of the Thompson Hine lawyers also advising Veyance have been added to the sixth paragraph of this story.

At a conference at Harvard Business School last weekend, former Paul, Weiss, Rifkind, Wharton & Garrison lawyer David Rubenstein, now co–CEO of buyout giant The Carlyle Group, acknowledged that the returns produced by the private equity industry may not be as robust these days as they’ve been in years past.