We develop a new distance-based test of localized knowledge spillovers that embeds the
concept of control patents. Using microgeographic data, we identify localization distance for …

We compare the geographic location of patent citations with that of the cited patents, as
evidence of the extent to which knowledge spillovers are geographically localized. We find …

Spillover of knowledge is considered to be an important cause of agglomeration of inventive
activity. Many studies argue that knowledge spillovers are localized based on the …

Adam B. Jaffe, Manuel Trajtenberg, and Rebecca Henderson (1993) developed a matching
method to study the geography of knowledge spillovers using patent citations, and found …

I report new evidence for localized knowledge spillovers identified by within-patent
variations in the geographic matching rates of citations added by inventors and citations …

We show evidence of localized knowledge spillovers using a new database of US patent
interferences terminated between 1998 and 2014. Interferences resulted when two or more …

Geographic localization of knowledge spillovers is a central tenet in multiple streams of
research. However, prior work has typically examined this phenomenon considering only …

The measurement of knowledge spillovers is subject, at root, to a fundamental identification
problem, which implies that any empirical result in the area must be treated with caution …

Abstract Buzard et al.(2017) show that American R&D labs are highly spatially concentrated
even within a given metropolitan area. We argue that the geography of their clusters is better …

The focus in this paper is on knowledge spillovers between high-technology firms in Europe,
as captured by patent citations. The European coverage is given by patent applications at …