In a previous post I analized geographic data quality of inventors in PATSTAT, for all the data contained.
The results for USPTO where not so good...
In order to understand how is the trend across years (if data quality is improving or noise is spread allover the data) I selected applicant/inventors who filed after 31/12/1999 applications type “A” (patents of invention);
the results was that 1% have no country and about 2% have no city (so it could be impossible to assign a region/NUTS2 code).
If we investigate by inventor/applicant county whether there may be some nation having a BIAS (only for those countries having more than 100 inventors/applicants) we see that those who have values above average are countries outside Europe, so not included in some regional reclassifications like NUTS2.
The results for USPTO where not so good...
| APPLN_AUTH | inventors | no state | no zip | no country | no address | no city |
| US | 5960856 | 86% | 98% | 21% | 97% | 25% |
In order to understand how is the trend across years (if data quality is improving or noise is spread allover the data) I selected applicant/inventors who filed after 31/12/1999 applications type “A” (patents of invention);
the results was that 1% have no country and about 2% have no city (so it could be impossible to assign a region/NUTS2 code).
| distinct appl/inv | 2774408 | |
| ctry code blank | 29858 | 1,08% |
| city blank | 56119 | 2,02% |
If we investigate by inventor/applicant county whether there may be some nation having a BIAS (only for those countries having more than 100 inventors/applicants) we see that those who have values above average are countries outside Europe, so not included in some regional reclassifications like NUTS2.
| CTRY CODE | COUNT | EMPTY CITY | % |
| '' | 29858 | 29071 | 97,40% |
| 'AE' | 166 | 2 | 1,20% |
| 'AR' | 1265 | 21 | 1,70% |
| 'AT' | 10330 | 117 | 1,10% |
| 'AU' | 22688 | 499 | 2,20% |
| 'BB' | 181 | 21 | 11,60% |
| 'BE' | 12980 | 230 | 1,80% |
| 'BG' | 428 | 5 | 1,20% |
| 'BM' | 249 | 39 | 15,70% |
| 'BR' | 4137 | 54 | 1,30% |
| 'BS' | 137 | 3 | 2,20% |
| 'BY' | 163 | 2 | 1,20% |
| 'CA' | 70324 | 800 | 1,10% |
| 'CH' | 23982 | 489 | 2,00% |
| 'CL' | 558 | 14 | 2,50% |
| 'CN' | 29490 | 180 | 0,60% |
| 'CO' | 251 | 5 | 2,00% |
| 'CR' | 148 | 20 | 13,50% |
| 'CU' | 547 | 7 | 1,30% |
| 'CY' | 156 | 5 | 3,20% |
| 'CZ' | 1297 | 34 | 2,60% |
| 'DE' | 178725 | 2477 | 1,40% |
| 'DK' | 10973 | 204 | 1,90% |
| 'EE' | 225 | 0 | 0,00% |
| 'EG' | 228 | 0 | 0,00% |
| 'ES' | 10369 | 151 | 1,50% |
| 'FI' | 13552 | 123 | 0,90% |
| 'FR' | 67931 | 881 | 1,30% |
| 'GB' | 76473 | 1480 | 1,90% |
| 'GR' | 801 | 14 | 1,70% |
| 'HK' | 5289 | 128 | 2,40% |
| 'HR' | 378 | 6 | 1,60% |
| 'HU' | 2316 | 14 | 0,60% |
| 'ID' | 219 | 8 | 3,70% |
| 'IE' | 5163 | 60 | 1,20% |
| 'IL' | 25108 | 273 | 1,10% |
| 'IN' | 18600 | 189 | 1,00% |
| 'IR' | 236 | 5 | 2,10% |
| 'IS' | 414 | 9 | 2,20% |
| 'IT' | 31398 | 516 | 1,60% |
| 'JP' | 479365 | 3346 | 0,70% |
| 'KR' | 115483 | 978 | 0,80% |
| 'KW' | 162 | 0 | 0,00% |
| 'KY' | 255 | 39 | 15,30% |
| 'LI' | 376 | 21 | 5,60% |
| 'LT' | 149 | 2 | 1,30% |
| 'LU' | 815 | 55 | 6,70% |
| 'LV' | 115 | 0 | 0,00% |
| 'MC' | 113 | 6 | 5,30% |
| 'MX' | 2341 | 25 | 1,10% |
| 'MY' | 2666 | 24 | 0,90% |
| 'NL' | 28215 | 972 | 3,40% |
| 'NO' | 5912 | 106 | 1,80% |
| 'NZ' | 3875 | 141 | 3,60% |
| 'PH' | 742 | 3 | 0,40% |
| 'PK' | 135 | 0 | 0,00% |
| 'PL' | 1139 | 5 | 0,40% |
| 'PT' | 735 | 8 | 1,10% |
| 'RO' | 328 | 0 | 0,00% |
| 'RU' | 6956 | 40 | 0,60% |
| 'SA' | 516 | 3 | 0,60% |
| 'SE' | 23806 | 343 | 1,40% |
| 'SG' | 8106 | 98 | 1,20% |
| 'SI' | 567 | 4 | 0,70% |
| 'SK' | 277 | 0 | 0,00% |
| 'TH' | 797 | 18 | 2,30% |
| 'TR' | 618 | 3 | 0,50% |
| 'TW' | 113480 | 939 | 0,80% |
| 'UA' | 844 | 1 | 0,10% |
| 'US' | 1311956 | 10561 | 0,80% |
| 'VE' | 456 | 3 | 0,70% |
| 'VG' | 430 | 48 | 11,20% |
| 'YU' | 103 | 0 | 0,00% |
| 'ZA' | 2572 | 68 | 2,60% |
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