Fiona Scott Morton, Dec 20, 2013
This article lays out the economics of competition between branded and generic pharmaceuticals and its welfare consequences. I explain the logic behind so-called “pay-for-delay” or “reverse payments” in the context of the current IP environment where weak (probabilistic) patents are frequently granted by the PTO. The article goes on to relate the Supreme Court decision in Activis to these concepts. I argue that the “scope of a patent” is closely related to its probability of being valid. !e Supreme Court dissenting opinion states that IP owners should be allowed to operate within the scope of the patent. For a very weak patent, that might be a very limited scope and bring the dissent into agreement with the majority opinion that a weak patent owner should not be allowed to create market power where the patent did not grant it. However, the dissenting opinion closes with a rejection of using the concept of probabilistic patents in legal analysis.
Featured News
New York Puts Businesses on Notice for Algorithmic Pricing
Mar 19, 2026 by
CPI
Herbert Smith Freehills Kramer Expands US Antitrust Team with New Partner Hire
Mar 19, 2026 by
CPI
Mexico Antitrust Authority Fines Oxygen Suppliers Over Exclusive Contracts
Mar 19, 2026 by
CPI
EU Cloud Group Pushes for Halt to Broadcom VMware Changes
Mar 19, 2026 by
CPI
Sen. Blackburn Releases Discussion Draft of Bill to Set Federal ‘Framework’ for AI Policy
Mar 19, 2026 by
CPI
Antitrust Mix by CPI
Antitrust Chronicle® – Data-Driven Competition
Mar 19, 2026 by
CPI
Data-Driven Competition: Implications For Enforcement and Merger Control
Mar 19, 2026 by
Alexandre de Corniere & Greg Taylor
From Tipping to Trustees: Why Data-Driven Markets Require Institutional Design, Not Optimization
Mar 19, 2026 by
Jens Prüfer & Paul de Bijl
Data Barriers to Entry: What We’ve Learned About Spotting Them and What We Still Don’t Know About Solutions
Mar 19, 2026 by
Bruno Carballa-Smichowski
When the Perfect Is the Enemy of the Good: Price Discrimination, Affordability, Precarity and Market Dynamism
Mar 19, 2026 by
Dan Ciuriak