skip to content

Moser, Petra

Works: 19 works in 19 publications in 2 languages and 37 library holdings
Roles: Author, Thesis advisor
Classifications: SF99.F64,
Publication Timeline
Publications about Petra Moser
Publications by Petra Moser
Most widely held works by Petra Moser
Zeitlich hochaufgelöste emissionsspektroskopische Untersuchung des Verbrennungsvorgangs im Otto-Motor by Petra Möser( Book )
1 edition published in 1995 in German and held by 10 libraries worldwide
Regeneration and utilization of Faidherbia albida and Acacia erioloba along ephemeral rivers of Namibia by Petra Moser( Book )
1 edition published in 2006 in English and held by 7 libraries worldwide
Taste-based discrimination : empirical evidence from a shock to preferences during WWI by Petra Moser( Computer File )
1 edition published in 2009 in English and held by 3 libraries worldwide
The law and economics of generic drug regulation by Christopher Scott Hemphill( file )
1 edition published in 2010 in English and held by 2 libraries worldwide
This dissertation examines the law and economics of generic drug entry, and the problems that arise from specific U.S. regulatory arrangements that govern innovation and competition in the market for patented pharmaceuticals. As Chapter 1 explains, competitive entry by generic drug makers is limited by both patents and industry-specific regulation, which together provide the means for brand-name drug makers to avoid competition and thereby recoup large investments in research, development, and testing. At the same time, the complex rules of the Hatch-Waxman Act furnish a pathway by which generic drug makers may challenge the validity or scope of brand-name patents, with a view to entering the market with a competing product prior to patent expiration. The subsequent chapters examine several aspects of the competitive interaction between brand-name and generic drug makers. Chapter 2 analyzes settlements of patent litigation between brand-name and generic drug makers, in which the brand-name firm pays the generic firm in exchange for delayed market entry. Such pay-for-delay settlements are an important, unresolved question in U.S. antitrust policy. The analysis reveals that the pay-for-delay settlement problem is more severe than has been commonly understood. Several specific features of the Act--in particular, a 180-day bounty granted to certain generic drug makers as an incentive to pursue pre-expiration entry--widen the potential for anticompetitive harm from pay-for-delay settlements, compared to the usual understanding. In addition, I show that settlements are "innovation inefficient" as a means of providing profits and hence ex ante innovation incentives to brand-name drug makers. To the extent that Congress established a preferred tradeoff between innovation and competition when it passed the Act, settlements that implement a different, less competition-protective tradeoff are particularly problematic from an antitrust standpoint. Chapter 3 synthesizes available public information about pay-for-delay settlements in order to offer a new account of the extent and evolution of settlement practice. The analysis draws upon a novel dataset of 143 such settlements. The analysis uncovers an evolution in the means by which a brand-name firm can pay a generic firm to delay entry, including a variety of complex "side deals" by which a brand-name firm can compensate a generic firm in a disguised fashion. It also reveals several novel forms of regulatory avoidance. The analysis in the chapter suggests that, as a matter of institutional choice, an expert agency is in a relatively good position to conduct the aggregate analysis needed to identify an optimal antitrust rule. Chapter 4 examines the co-evolution of increased brand-name patenting and increased generic pre-expiration challenges. It draws upon a second novel dataset of drug approvals, applications, patents, and other drug characteristics. Its first contribution is to chart the growth of patent portfolios and pre-expiration challenges. Over time, patenting has increased, measured by the number of patents per drug and the length of the nominal patent term. During the same period, challenges have increased as well, and drugs are challenged sooner, relative to brand-name approval. The analysis shows that brand-name sales, a proxy for the profitability of the drug, have a positive effect on the likelihood of generic challenge, consistent with the view that patents that later prove to be valuable receive greater ex post scrutiny. The likelihood of challenge also varies by patent type and timing of expiration. Conditional on sales and other drug characteristics, drugs with weaker patents, particularly those that expire later than a drug's basic compound patent, face a significantly higher likelihood of challenge. Though the welfare implications of Hatch-Waxman patent challenge provisions are complicated, these results suggest these challenges serve a useful purpose, in promoting scrutiny of low quality and late-expiring patents
Prinzessin (N)Immerfroh : [ein Erlebnismärchen] ( Book )
1 edition published in 2004 in German and held by 2 libraries worldwide
Pflege von Menschen mit Hemiplegie ( visu )
1 edition published in 1988 in Undetermined and held by 1 library worldwide
Lokale Agenda 21 Stadt Esslingen, Untersuchung zu den Fahrradparkmöglichkeiten am Esslinger Bahnhof by Anne Faßbender( Book )
1 edition published in 1999 in German and held by 1 library worldwide
Fremdwährungskredite : Quo Vadis? by Petra Moser( Book )
1 edition published in 2007 in German and held by 1 library worldwide
Essays in the economics of education and innovation by Nicola Bianchi( file )
1 edition published in 2015 in English and held by 1 library worldwide
This dissertation contains three essays on the economics of education and innovation. In the first essay, I study the effects of increased access to higher education by examining a dramatic 1961 Italian reform that increased university enrollment in science, technology, engineering, and math (STEM) fields by more than 200 percent in a few years. The peculiar features of the reform allow me to identify students who were unaffected, directly affected, and indirectly affected. They also allow me to identify key channels through which the effects ran. Using data I collected from tax returns and hand-written transcripts on more than 27,000 students, I show that the direct effects of the reform were as intended: many more students enrolled and many more obtained degrees. However, I also find that those induced to enroll earned no more than students in earlier cohorts who were denied access to university. I reconcile these surprising results by showing that the education expansion reduced returns to skill and lowered university learning through congestion and peer effects. I also demonstrate that apparently inframarginal students were significantly affected: the most able of them abandoned STEM majors rather than accept lower returns and lower human capital. The promotion of STEM education, realized by inducing more students to enroll in university STEM majors, might have large positive externalities by fostering the production of innovation. In the second essay (joint work with Michela Giorcelli), we use the 1961 Italian reform of college admissions as a positive shock to the amount of STEM workers in the economy. We isolate the effect of the policy on invention using a variety of techniques. At the individual level, we link the school and income data of students that were in school around the policy implementation with information on each Italian patent that they owned or developed. At the national level, we exploit differential increases of STEM skills in municipalities that were at varying distance from a STEM school. In both cases, we do not find strong evidence that easier access to university STEM majors led to higher level of patenting. In the third essay (joint work with Joerg Baten and Petra Moser), we investigate whether compulsory licensing - which allows governments to license patents with- out the consent of patent-owners - discourages invention. Our analysis exploits new historical data on German patents to examine the effects of compulsory licensing under the US Trading-with-the-Enemy Act on invention in Germany. We find that compulsory licensing was associated with a 28 percent increase in invention. Historical evidence indicates that, as a result of war-related demands, fields with licensing were negatively selected, so that OLS estimates may underestimate the positive effects of compulsory licensing on future inventions
Essays on development economics by Nadeem Mahedi Karmali( file )
1 edition published in 2011 in English and held by 1 library worldwide
This dissertation is comprised of three chapters, all of which deal with topics in development economics. The first chapter explores the extent to which ability accounts for the observed differences in private school test scores versus public school test scores. The second chapter looks at the effects of an exogenous indigo price change in the nineteenth century on innovation. Finally, the third chapter looks at victims of violence during a civil war and tests whether victims of violence are targeted for their wealth, and particularly if this is the case for more liquid households. In school choice, and between private and public schools, sorting plays an important role. A sharp general equilibrium model of school choice is employed in Chapter 1 to estimate how much of the difference between private and public school test scores is due to ability differences. By calibrating a general equilibrium model and combining it with the universe of grade 8 test scores from Kenya across ten years, a distributional analysis is conducted to estimate the private school effect after controlling for ability sorting. Using the equilibrium distributions of ability from the model, the results suggest that, in the base case, the robust one standard deviation difference in test scores reduces to 0.50 standard deviations once heterogeneous ability is accounted for in each sector. Furthermore there is strong evidence that higher ability students perform better at private schools. Induced innovation, the idea that a relative change in factor prices will lead to innovation of the factor that has become relatively expensive, has strong theoretical foundations but scant empirical evidence. Chapter 2 uses the historical events of riots in Bengal, India and the American Civil War both in close succession in the late nineteenth century, to show how these events increased prices of natural indigo and induced innovation in synthetic colors. Identification comes from the substitutability of synthetic colors for natural colors. In terms of numbers, the induced effect is estimated to be an extra 97 patents, or roughly one fifth of the existing patents in dyeing at the time. Chapter 3 considers the determinants of violence in Sudan with a unique household dataset to characterize the degree to which victims are targeted for economic reasons. Wealthier households are found to have disproportionately worse outcomes across both physical (e.g. loss of assets) and human (e.g. personal injury) measures of the impact of the conflict. This pattern of targeting is robust, and furthermore there is evidence that violence was especially targeted at those who had lootable wealth
Patent pools : licensing strategies in the absence of regulation by Ryan Lampe( Article )
1 edition published in 2012 in Undetermined and held by 1 library worldwide
Essays in health economics and industrial organization by Paul Evan Wong( file )
1 edition published in 2015 in English and held by 1 library worldwide
This dissertation presents three essays in health economics and industrial organization. In the first essay, titled "Entry and Long-Run Market Structure in Nongroup Health Insurance, " I examine why there are many highly concentrated markets for nongroup (individual) health insurance in the United States. I do this by estimating a static model of entry, with which I show two results. First, incumbent insurers attract disproportionately high market share but do not get a disproportionate share of the most profitable consumers via underwriting (screening). Due to their high market share, they partially deter entry by other more marginal insurers, contributing to high market concentration. Second, rural areas have low population, unprofitable demographics (low-income, high disease incidence), and higher fixed costs of entry (isolated, few physicians). All three confluent factors at once cause rural areas to face significantly more market concentration than others. I use the estimated model to simulate the long-run changes in market concentration under the Affordable Care Act. Most urban areas face a decline in market concentration, but most rural areas - which were already highly concentrated - face an increase in market concentration. In the second essay, titled "Competition and Innovation: Did Monsanto's Entry Encourage Innovation in GMO Crops?, " I examine the relationship between competition and innovation using Monsanto's entry into agricultural biotechnology. In 1996, Monsanto - then a chemical firm - bought a plant breeder that had developed a new corn hybrid, which could withstand Monsanto's powerful herbicide Roundup. Due to the pre-existing structure of the US plant-breeding industry, this acquisition and Monsanto's acquisition of five other corn breeders meant that Monsanto had also entered soy breeding, in addition to corn. As a result, the market structure of soy breeding shifted from a quasi monopoly (by Pioneer Hi-Bred) to a duopoly with a competitive fringe. At the same time, Monsanto's acquisitions created no significant change in the market structure for other crops, such as wheat or cotton. Using new data on field trials, I study the effects of these changes on innovation. These data indicate that Pioneer and the competitive fringe innovated less in response to Monsanto's entry. Data on patent applications, however, indicate that Pioneer and the competitive fringe patented more after Monsanto entered. In the third essay, titled "Studying State-Level Variation in Nongroup Health Insurance Regulation: Insurers' Incentives to Screen Consumers, " I compare different state-level regulations for nongroup (individual) health insurance, and I use the comparison to show how regulation may affect insurers' incentives to screen and reject high-cost consumers. The study is possible because of historical variation in regulation - various states instituted high-risk pool (HRP), community rating (CR), and guaranteed issue (GI) regulation in the 1990s. I compare rejections of individual insurance applications across the different regulatory regimes. Rejections do not decline under HRP regulation. Historically, HRPs have generated little change to demand for private nongroup insurance among high-cost consumers, leaving underwriting (i.e. screening) unchanged. CR by itself (without GI) increases rejections. Insurers have a stronger incentive to underwrite when it is allowed but pricing is restricted. GI (with CR) decreases rejections, but they are not fully eliminated - a non-zero fraction of consumers are still rejected. Insurers face substantial incentive to screen consumers, which may outweigh the implicit cost of screening that regulation imposes. In light of insurers' behavior under these three regulations, future policy should decrease insurers' incentives to screen consumers. This reduces wasted resources devoted to underwriting
Freiraumgestaltung der Vogelmühle bei Waiblingen by Petra Moser( Book )
1 edition published in 1988 in German and held by 1 library worldwide
Essays on international and innovation economics by Lisa Kamran Bilir( file )
1 edition published in 2011 in English and held by 1 library worldwide
This dissertation examines the influence of intellectual property institutions on cross-border economic activity. Chapters 1 and 2 focus on the investment strategies of multinational firms in the presence of intellectual property risk. Chapter 3 examines the impact of patent treaties on international technology transfer. In Chapter 1, I develop a theoretical model of multinational firms' location and production decisions in the presence of cross-country differences in intellectual property rights and cross-sector differences in the length of product lifecycles. I show that patent reforms are irrelevant to firms' sourcing decisions in industries with rapid product turnover. By contrast, strong patent laws attract affiliate activity in industries with longer product lifecycles, because products in these industries are more likely to be imitated prior to obsolescence and are thus more reliant on patent enforcement to protect revenues. These effects are more pronounced for less-productive firms. Using comprehensive panel data on the sales, assets, and employment of U.S. multinationals and their affiliates abroad and a new measure of product obsolescence, I find robust empirical support for these predictions. Effects are significant along all margins of multinational activity, including multinational presence by country and sector, total affiliate sales conditional on presence, the number of affiliates, and affiliate-level sales. In addition, I find that stronger patent rights tilt the balance of cross-border activity away from exports and toward multinational activity. Finally, my identification strategy allows me to isolate the causal effect of patent reforms on multinational operations, which the prior literature has struggled to establish because of concurrent policy reforms. In Chapter 2, I develop a theory of global supply chains in the presence of imitation risk, where sectors vary in fragmentation costs and product obsolescence rates. The model provides detailed predictions regarding the sensitivity of multinationals' offshoring decisions to intellectual property rights abroad. In particular, when intellectual property rights abroad are strengthened, firms are found to increase the technology intensity and level of offshoring, with the largest effects in sectors with high fragmentation costs. Similar to Chapter 1, these effects are also larger in sectors with long product lifecycles. In addition, the model predicts that each firm determines the number of offshore countries involved in its supply chain based on a simple trade-off: on one hand, fragmentation allows the firm to better protect its intellectual property, but on the other hand, fragmentation generates increasing coordination costs. Chapter 3 examines the influence of the Paris Convention of 1883, the first international patent treaty, on the flow of patented technologies across countries; this chapter is co-authored with Petra Moser. U.S. accession to the Convention in 1887 strengthened patent protection for nationals from current treaty members, but had no effect on the patent rights of non-members. Data on over 86,000 U.S. patents granted between 1865 and 1914 indicate that strengthened intellectual property rights encouraged inventors from member countries to increase patenting in the United States, relative to inventors from non-member countries. The data also reveal that stronger intellectual property rights had the most significant effects on technology transfer from member countries with high pre-treaty levels of education and per-capita income. In addition, responsiveness to the Paris Convention was higher in industries that were more dependent on patent protection compared with industries that were less dependent on patents
Was electricity a general purpose technology? evidence from historical patent citations by Petra Moser( Article )
1 edition published in 2004 in English and held by 1 library worldwide
How do patent laws influence innovation? evidence from nineteenth-century world's fairs by Petra Moser( Article )
1 edition published in 2005 in English and held by 1 library worldwide
Three essays on industrial organization by Xing Li( file )
1 edition published in 2016 in English and held by 1 library worldwide
This dissertation examines a few empirical questions industrial organization and economics of innovation. Chapter 1 studies mobile app industry. More specifically, success breeds success in many mass market industries, as well known products gain further consumer acceptance because of their visibility. However, new products must struggle to gain consumer's scarce attention and initiate that virtuous cycle. The newest mass market industry, mobile apps, has these features. Success among apps is highly concentrated, in part because the "top apps lists" recommend apps based on past success as measured by downloads. Consequently, in order to introduce themselves to users, new app developers attempt to gain a position on the top app lists by "buying downloads, " i.e., paying a user to download the app onto her device. We build a model to rationalize this rational, that accommodates the impact of buying downloads on top list ranking, and optimal investment in buying downloads. We leverage a private dataset of one platform for buying downloads and identify the return on this investment, as a test for the assumption of the model. $100 invested will improve the ranking by 2.2%. We provide some informal tests of the two empirical prediction of the model: (1) there are two humps in the diffusion pattern of the app, and (2) early-day ranking is less persistent than later-day ranking. We estimate an empirical analog of the model to show the relative importance of buying downloads and rich heterogeneity in the market. We use these estimates to evaluate the efficiency of top-ranking list as a revealing system by counterfactual. This chapter is coauthored with Tim Bresnahan and Pai-Ling Yin. Chapter 2 provides a model that uses preference heterogeneity to rationalize the cross-sectional and intertemporal variation in a firm's horizontal product differentiation strategies. Product-line dynamics arise from shocks to preference heterogeneity. For example, in the potato chip category I study, consumer concerns over fat levels in foods created two desirable alternatives (low fat and zero fat) for each flavor. On the supply side, firms learn about these changing tastes and adapt product lines accordingly. For tractability, the heterogeneity in preference is captured by the nesting parameter in an aggregate nested logit demand model. I find greater preference heterogeneity for chips in smaller packages and for markets with more demographic diversity. The dominant firm in the market bases its decisions primarily on its past experience in the market, with the latest preference shocks representing only 30% of the influence in product-line decisions. Gross margins are increased by 5% if firms have perfect information about preference heterogeneity. Costs for product line maintenance constitute about 2% of total revenue. Sunk costs incurred when expanding the product line are estimated to be four times the per-product fixed cost, thereby limiting the flexibility of product-line adjustment. The probability of line length adjustment grows from 70% to 90% under a smooth cost structure. Chapter 3 exploits a differential increase in copyright under the UK Copyright Act of 1814 - in favor of books by dead authors - to examine the influence of longer copyrights on price. Difference-in-differences analyses, which compare changes in the price of books by dead and living authors, indicate a substantial increase in price in response to an extension in copyright length. By comparison, placebo regressions for books by dead authors that did not benefit from the extension indicate no differential increase. Historical evidence suggests that longer copyrights increase price by improving publishers' ability to practice intertemporal price discrimination. This chapter is coauthored with Petra Moser and Megan MacGarvie
Essays in public and labor economics by Frédéric Panier( file )
1 edition published in 2015 in English and held by 1 library worldwide
This thesis is composed of three empirical papers in the field of labor and public economics. The first paper uses historical data from the New-York Stock Exchange to investigate the importance of ethnic discrimination, ethnic networks and ethnic homophily in the field of finance. The second paper studies the role of parental insurance on the job search behavior of new entrants in the labor market. It also uses parental shocks around the time of the child's entry into the labor force as an instrument to test for the existence of persistent effects from a temporary increase in job search effort at the beginning of a worker's career. The third paper takes advantage of an important tax reform that took place in Belgium in 2006 to answer a longstanding question in the field of public economics and corporate finance: what is the role of corporate taxes in determining the observed levels of leverage among incorporated firms
moreShow More Titles
fewerShow Fewer Titles
English (11)
German (6)
Close Window

Please sign in to WorldCat 

Don't have an account? You can easily create a free account.