Software security is a major concern for vendors, consumers, and regulators since attackers that exploit vulnerabilities can cause substantial damages. When vulnerabilities are discovered after the software has been sold to consumers, the firms face a dilemma. A policy of disclosing...

This paper is a study of licensing in a patent thicket. In a patent thicket licensing allows firms to avoid hold-up. It will have different effects on firms' R&D incentives depending on whether firms license existing or future patents. Building on a model of a patent portfolio race, firms'...

Licensing in a patent thicket allows firms to either avoid or resolve hold-up. Firms’ R&D incentives depend on whether they license ex ante or ex post. We develop a model of a patent portfolio race, which allows for endogenous R&D efforts, to study firms’ choice between ex ante and ex post...

The paper defines, implements and compares two empirical tests of relevant markets. While the traditional SSNIP test compares an initial industry equilibrium to an out-of-equilibrium situation, the FERM test, our contribution, compares the same initial equilibrium to an other equilibrium...

Using a stochastic frontier model and a comprehensive dataset, we study factors that affect corporate efficiency in Europe. We find that (i) larger firms are less efficient than smaller firms, (ii) greater leverage contributes to corporate efficiency, and (iii) high competition is less...

In this paper, we present for the first time a qualitative and quantitative comparison between trade in services and trade in goods at firm level for the same country. We focus first on static features of trade such as participation rates,, firms' characteristics, heterogeneity, concentration...

Using micro data for Belgium we investigate the relationship between occupational tasks changes and the rise of service trade. We focus the analysis on the extensive margin and look at the heterogeneous proliferation of firms involved in exports and imports of services across sectors...

Trade and investment in services is inhibited by a range of policy restrictions, but the best offers so far in the Doha negotiations are on average twice as restrictive as actual policy. They will generate no additional market opening. Regulatory concerns help explain the limited progress. We...

This paper focuses on developments in the engagement of developing countries in the multilateral trading system in light of the recent re-issue of Robert Hudec’s seminal book, Developing Countries in the GATT Legal System. Starting in the late 1980s, just after Hudec published his book, a...

A large literature has emerged focusing on the post-entry performance of firms and, in particular, on the links between firm growth, survival, size and age. While these studies have resulted in findings that are sufficiently consistent as to constitute stylized facts, virtually all of these...