Results

Journal article

Review of World Economics:

The changing structure of global value chains and technological change: evidence from the firm-level patent data

This paper explores how changes in the relative position in the Global Value Chains (GVCs) affect firms? innovation activities. The analysis combines matched patent-firm data with information on GVC networks from the OEC...Read more...

Journal article

Journal of International Economics:

Tickets to the global market: first US patent award and Chinese firm exports

We investigate how international patent activity enables firms from emerging economies to thrive in the global marketplace. We match Chinese customs data to US patent records, and leverage the quasi-random assignment of ...Read more...

CEP discussion paper

Paper tiger? Chinese science and home bias in citations

We investigate the phenomenon of home bias in scientific citations, where researchers disproportionately cite work from their own country. We develop a benchmark for expected citations based on the relative size of count...Read more...

Journal article

Research Policy:

A new dataset to study a century of innovation in Europe and in the US

Innovation is an important driver of potential growth but quantitative evidence on the dynamics of innovative activities in the long-run are hardly documented due to the lack of data, especially in Europe. In this paper,...Read more...

CEP discussion paper

Tickets to the global market: first US patent awards and Chinese firm exports

We investigate how international patent activity enables firms from emerging economies to thrive in the global marketplace. We match Chinese customs data to US patent records and leverage the quasi-random assignment of U...Read more...

CEP discussion paper

Exporting ideas: knowledge flows from expanding trade in goods

We examine the effect of entry by French firms into a new export market on the dynamics of their patents' citations received from that destination. Applying a difference-in-differences identification strategy with a stag...Read more...

CEP discussion paper

Knowledge spillovers from clean innovation. A tradeoff between growth and climate?

Innovation policy faces a tradeoff between growth and climate objectives when the knowledge spillover externality from clean innovation is low compared to other sectors. To make such a comparison, we use patent data to e...Read more...

Journal article

Research Policy:

Global value chains and domestic innovation

This paper explores how changes in both position and participation in Global Value Chain (GVC) networks affect firm innovation. The analysis combines matched patent-firm data for Japan with measures of GVC network centra...Read more...

Journal article

American Economic Review :

Technology gaps, trade and income

This paper quantifies the contribution of technology gaps to international income inequality. I develop an endogenous growth model where cross-country differences in R&D efficiency and cross-industry differences in innov...Read more...

CentrePiece article

Clean technologies for growth and equity

Public investment in developing energy sources that don?t cause climate change is a strategy for economic growth that could also contribute to the UK?s levelling up agenda, says Ralf Martin. His analysis indicates that s...Read more...

CEP discussion paper

The rise of China's technological power: the perspective from frontier technologies

We use patent data to study the contribution of the US, Europe, China and Japan to frontier technology using automated patent landscaping. We find that China's contribution to frontier technology has become quantitativel...Read more...

CEP discussion paper

A new dataset to study a century of innovation in Europe and in the US

Innovation is an important driver of potential growth but quantitative evidence on the dynamics of innovative activities in the long-run are hardly documented due to the lack of data, especially in Europe. In this paper,...Read more...

CEP discussion paper

Knowledge spillovers from clean and emerging technologies in the UK

The UK government has committed to increase R&D support for clean technologies in an effort to meet its net-zero target by 2050. The opportunity cost of such programs crucially depends on the value of knowledge spillover...Read more...

CEP discussion paper

Air pollution and innovation

If air pollution harms innovation -- and therefore future productivity -- existing assessments of its economic cost are incomplete. We estimate the effect of fine particulate matter concentration on inventive output in 1...Read more...

CEP discussion paper

Opposing firm-level responses to the China shock: horizontal competition versus vertical relationships

We decompose the "China shock" into two components that induce different adjustments for firms exposed to Chinese exports: a horizontal shock affecting firms selling goods that compete with similar imported Chinese goods...Read more...

Journal article

European Journal of Finance:

Is firm-level clean or dirty innovation valued more?

We examine how Tobin's Q is linked to 'clean' and 'dirty' innovation and innovation efficiency at the firm level. Clean innovation relates to patented technologies in areas such as renewable energy generation and electri...Read more...

Journal article

Research Policy:

Measuring technological novelty with patent-based indicators

This study provides a new, more comprehensive measurement of technological novelty. Integrating insights from the existing economics and management literature, we characterize inventions ex ante along two dimensions of t...Read more...

Journal article

Scientometrics:

Patent citation indicators: one size fits all?

The number of citations that a patent receives is considered an important indicator of the quality and impact of the patent. However, a variety of methods and data sources can be used to calculate this measure. This pape...Read more...

CEP discussion paper

Patents and Cumulative Innovation: Causal Evidence from the Courts

Cumulative innovation is central to economic growth. Do patent rights facilitate or impede follow-on innovation? We study the causal effect of removing patent rights by court invalidation on subsequent research related t...Read more...

CEP discussion paper

Fast-Tracking 'Green' Patent Applications: An Empirical Analysis

This paper presents the first empirical analysis of programmes to fast-track `green? patent applications in place in seven Intellectual Property offices around the world. We find that only a small share of green patent a...Read more...

CEP discussion paper

Patent Thickets and the Market for Innovation: Evidence from Settlement of Patent Disputes

We study how fragmentation of patent rights (`patent thickets?) and the formation of the Court of Appeal for the Federal Circuit (CAFC) affected the duration of patent disputes, and thus the speed of technology diffusion...Read more...

CEP discussion paper

Is Distance Dying at Last? Falling Home Bias in Fixed Effects Models of Patent Citations

We examine the ?home bias? of international knowledge spillovers as measured by the speed of patent citations (i.e. knowledge spreads slowly over international boundaries). We present the first compelling econometric evi...Read more...

CEP discussion paper

Strategic Patenting and Software Innovation

Strategic patenting is widely believed to raise the costs of innovating, especially in industries characterised by cumulative innovation. This paper studies the effects of strategic patenting on R&D, patenting and market...Read more...

CEP discussion paper

Basic Research and Sequential Innovation

The commercial value of basic knowledge depends on the arrival of follow-up developments mostly from outside the boundaries of the inventing firm. Private returns would depend on the extent the inventing firm internalize...Read more...