Issue Years 
Versus 
Patent Numbers

Presented in this table are the patent numbers issued by the U.S. Patent and Trademark Office from 1790 - 2014, numbering from the beginning of each year.  

Issue
Year
1st
Utility
1st
Design
1st
Plant
1st
Reissue
1st
Statutory
Invention
Registration
(SIR)

1790 to 1836

X1 to X9902

    
18361    
1837110    
1838546  RE1 
18391061  RE7 
18401465  RE20 
18411923  RE30 
18422413  RE36 
18432901D1 RE49 
18443395D15 RE60 
18453873D27 RE67 
18464348D44 RE78 
18474914D103 RE91 
18485409D163 RE105 
18495993D209 RE128 
18506981D258 RE158 
18517865D341 RE184 
18528622D431 RE209 
18539512D540 RE229 
185410358D626 RE258 
185512117D683 RE286 
185614009D753 RE337 
185716324D860 RE420 
185819010D973 RE517 
185922477D1075 RE643 
186026642D1183 RE874 
186131005D1366 RE1106 
186234045D1508 RE1253 
186337266D1703 RE1369 
186441047D1879 RE1596 
186545685D2018 RE1844 
186651784D2239 RE2140 
186760658D2533 RE2430 
186872959D2858 RE2830 
186985503D3304 RE3250 
187098460D3810 RE3784 
1871110617D4547 RE4223 
1872122304D5452 RE4687 
1873134504D6336 RE5216 
1874146120D7083 RE5717 
1875158350D7969 RE6200 
1876171641D8884 RE6831 
1877185813D9686 RE7452 
1878198733D10385 RE8020 
1879211078D10975 RE8529 
1880223211D11567 RE9017 
1881236137D12082 RE9523 
1882251685D12647 RE9994 
1883269820D13508 RE10265 
1884291016D14528 RE10432 
1885310163D15678 RE10548 
1886333494D16451 RE10677 
1887355291D17046 RE10793 
1888375720D17995 RE10892 
1889395305D18830 RE10978 
1890418665D19553 RE11053 
1891443987D20439 RE11137 
1892466315D21275 RE11217 
1893488976D22092 RE11298 
1894511744D22994 RE11397 
1895531619D23922 RE11461 
1896552502D25037 RE11520 
1897574369D26482 RE11581 
1898596467D28113 RE11646 
1899616871D29916 RE11706 
1900640167D32055 RE11798 
1901664827D33813 RE11879 
1902690385D35547 RE11960 
1903717521D36187 RE12070 
1904748567D36723 RE12189 
1905778834D37280 RE12299 
1906808618D37766 RE12428 
1907839799D38391 RE12587 
1908875679D38980 RE12738 
1909908436D39737 RE12906 
1910945010D40424 RE13066 
1911980178D41063 RE13189 
19121013095D42073 RE13346 
19131049326D43415 RE13504 
19141083267D45098 RE13668 
19151123212D46813 RE13858 
19161166419D48358 RE14040 
19171210389D50117 RE14238 
19181251458D51629 RE14417 
19191290027D52836 RE14582 
19201326899D54359 RE14785 
19211364063D56844 RE15018 
19221401948D60121 RE15257 
19231440362D61748 RE15513 
19241478996D63675 RE15739 
19251521590D66346 RE15974 
19261568040D69170 RE16240 
19271612700D71772 RE16515 
19281654521D74159 RE16841 
19291696897D77347 RE17176 
19301742181D80254 RE17550 
19311787424D82966PP1RE17917 
19321839190D85903PP6RE18312 
19331892663D88847PP52RE18705 
19341941449D91258PP85RE19038 
19351985878D94179PP117RE19409 
19362026516D98045PP162RE19804 
19372066309D102601PP211RE20226 
19382104004D107738PP266RE20610 
19392142080D112765PP307RE20959 
19402185170D118358PP352RE21311 
19412227418D124503PP437RE21683 
19422268540D130989PP499RE21992 
19432307007D134717PP564RE22242 
19442338081D136946PP611RE22415 
19452366154D139862PP649RE22585 
19462391856D143386PP666RE22706 
19472413675D146165PP722RE22827 
19482433824D148267PP774RE22957 
19492457797D152235PP818RE23068 
19502492944D156686PP911RE23186 
19512536016D161404PP1001RE23315 
19522580379D165568PP1059RE23449 
19532624046D168527PP1160RE23612 
19542664562D171241PP1238RE23763 
19552698434D173777PP1339RE23918 
19562728913D176490PP1442RE24105 
19572775762D179467PP1543RE24263 
19582818567D181829PP1672RE24413 
19592866973D184204PP1792RE24584 
19602919443D186973PP1893RE24761 
19612966681D189516PP2009RE24918 
19623015103D192004PP2117RE25107 
19633070801D194304PP2208RE25309 
19643116487D197269PP2337RE25507 
19653163865D199955PP2465RE25707 
19663226729D203379PP2585RE25953 
19673295143D206567PP2699RE26132 
19683360800D209732PP2784RE26328 
19693419907D213084PP2856RE26515 
19703487470D216419PP2959RE26749 
19713551909D219637PP3011RE27018 
19723631539D222793PP3063RE27264 
19733707729D225695PP3281RE27540 
19743781914D229729PP3413RE27856 
19753858241D234033PP3674RE28292 
19763930271D238315PP3824RE28671 
19774000520D242881PP4001RE29095 
19784065812D246811PP4174RE29506 
19794131952D250676PP4360RE29872 
19804180867D253796PP4491RE30183 
19814242757D257746PP4612RE30469 
19824308622D262495PP4796RE30840 
19834366579D267440PP4970RE31115 
19844423523D272009PP5168RE31479 
19854490855D276949PP5380RE31783H1
19864562596D282020PP5622RE32061H7
19874633526D287540PP5846RE32323H182
19884716594D293500PP6075RE32569H396
19894794652D299180PP6501RE32814H563
19904890335D305275PP7089RE33138H720
19914980927D313301PP7408RE33510H863
19925077836D322878PP7761RE33786H1007
19935175886D332170PP8082RE34154H1124
19945274846D342818PP8527RE34493H1270
19955377359D353932PP9026RE34814H1389
19965479658D365671PP9413RE35136H1512
19975590420D377107PP9776RE35418H1623
19985704062D388585PP10172RE35708H1701
19995855021D403485PP10743RE36021H1766
20006009555D418273PP11169RE36479H1826
20016167569D435713PP11728RE37006H1930
20026334220D452599PP12314RE37489H2008
20036502244D468073PP13447RE37954H2057
20046681884D484671PP14441RE38377H2093
20056836899D500396PP15460RE38680H2113
20066981282D513356PP16176RE38928H2137
20077155746D534331PP17326RE39452H2177
20087313829D558426PP18373RE39964H2208
20097472428D584026PP19613RE40613H2228
20107640598D607176PP20622RE41067H2234
20117861317D629996PP21604RE42020H2251
20128087094D651376PP22428RE43053H2266
20138341762D673346PP23288RE43884H2274
20148621662D696836PP24135RE44689H2288

The current patent numbering system began with a patent issued on July 13, 1836. Prior to that date, 9,902 patents had been issued and are known as the"un-numbered patents" and are cataloged as the "X" prefix series..  USPAT.COM maintains the complete index of the un-numbered patents as well.  The above table was created as a result of combined information produced at the Sunnyvale PDTL by USPAT.COM and USPTO and is believed to be correct.

We make note of the fact that some numbers within a series of the above table are unused.  The result is that the number of patents granted during any given year cannot be determined by subtracting  numbers from one year to the next.

Reissue patents ("RE" prefix series, above) were not separately numbered until 1838. Contact us for inquiries regarding reissued patents prior to 1838.

The "H" prefix series of patents, above refers to the Statutory Invention Registration series of patents.

Defensive Publications ("T" prefix series) and Improvement("AI" prefix series) patents are not included in the table, above.

For a more detailed table, including "T" and "H"prefixes, follow this link to download a PDF file courtesy of USPTO Issue Dates and Patent Numbers Since 1836.


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