Do precedents matter in WTO dispute decisions?

WTO panel:

In our view, there is not a system of precedent within the WTO dispute settlement system and panels are not bound by Appellate Body reasoning. However, we agree with Korea that adopted reports create legitimate expectations among WTO Members and that “following the Appellate Body’s conclusions in earlier disputes is not only appropriate, but is what would be expected from panels, especially where the issues are the same”.