In questioning during oral argument Tuesday in Philadelphia, a state Supreme Court justice characterized the drugmaker Wyeth as asserting that there is enough protection for persons harmed by prescription drugs in federal regulation of the release of drugs onto the market, and limiting plaintiffs to lawsuits for drugmakers’ alleged failures to adequately warn of risks.

Plaintiffs are arguing in a case that could change the landscape of pharmaceutical products liability law in Pennsylvania that drugmakers can be sued for the negligent design defect of their drugs.