caa a22 4500 378898744 CHVBK 20180305123512.0 cr unu---uuuuu 161128e20041104xx s 000 0 eng 10.2202/1538-0653.1329 doi (NATIONALLICENCE)gruyter-10.2202/1538-0653.1329 Time In Purgatory: Examining the Grant Lag for U.S. Patent Applications [Elektronische Daten] [David Popp, Ted Juhl, Daniel K.N. Johnson] As patent applications increase, and the range of patentable technologies increases, the length of time it takes for an invention to go through the examination process at the U.S. Patent Office has increased. Concerns over the distributional effects of these changes have been expressed during policy debates. We use data on U.S. patent applications and grants to ask who is affected by longer grant lags. We augment this analysis with interviews of patent examiners, leading to a better understanding of the examination process. Our analysis finds that differences across technology are most important. These differences do not erode over time, suggesting that learning effects alone will not reduce grant lags. Inventor characteristics have statistically significant effects, but the magnitudes are small. ©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston patents nationallicence examinations nationallicence grant lags nationallicence USPTO nationallicence Popp David Syracuse University, dcpopp@maxwell.syr.edu aut Juhl Ted University of Kansas, juhl@ku.edu aut Johnson Daniel K.N. Colorado College, djohnson@coloradocollege.edu aut Topics in Economic Analysis & Policy De Gruyter 4/1(2004-11-04) 4:1 2004 4 bejeap https://doi.org/10.2202/1538-0653.1329 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2202/1538-0653.1329 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Popp David Syracuse University, dcpopp@maxwell.syr.edu aut NATIONALLICENCE 700 1- Juhl Ted University of Kansas, juhl@ku.edu aut NATIONALLICENCE 700 1- Johnson Daniel K.N. Colorado College, djohnson@coloradocollege.edu aut NATIONALLICENCE 773 0- Topics in Economic Analysis & Policy De Gruyter 4/1(2004-11-04) 4:1 2004 4 bejeap CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter