The U.S. Supreme Court building
The Supreme Court in Washington, D.C.Rahmat Gul/AP

Ed Silverman, a senior writer and Pharmalot columnist at STAT, has been covering the pharmaceutical industry for nearly three decades. He is also the author of the morning Pharmalittle newsletter and the afternoon Pharmalot newsletter.

After months of anticipation, Supreme Court justices heard arguments about a long-standing tactic used by generic companies to carve out a distinct market for a medicine, and did not appear inclined to alter legal standards for the maneuver.

At issue is skinny labeling, which refers to moves by generic companies that seek regulatory approval to market a drug for a specific use, but not other patented uses for which a brand-name medicine is prescribed. For instance, a generic drug could be marketed to treat one type of heart problem but not another. In doing so, the generic company seeks to avoid lawsuits claiming patent infringement.

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This tactic has been a key tool for generic companies ever since the Hatch-Waxman Act was signed into law more than four decades ago. The law established the mechanisms by which generic drugs can more readily enter the marketplace. And skinny labeling is one way that Congress attempted to foster more competition and benefit consumers.

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