Multidistrict litigation is “littered with examples of undisclosed non-party involvement gone wrong,” according to Sanofi-Aventis U.S. LLC in a motion renewing its demand that plaintiffs attorneys disclose outside funding of lawsuits filed over breast cancer drug Taxotere.

Among the ills Sanofi lawyers depicted: fee arrangements with doctors, medical screenings of plaintiffs, and outside funders that allowed doctors to charge inflated costs on medical liens.

“The same issues presented in these landmark, and some ongoing, MDLs are potentially implicated here,” wrote Douglas Moore of New Orleans-based Irwin Fritchie Urquhart & Moore and Harley Ratliff, a partner at Shook, Hardy & Bacon in Kansas City, Missouri, in a motion filed last month.