| Patents > Search Collections > " Manual of Patent Examining Procedure" Most Recent Edition > MPEP Editions and Revisions 1948 - 2023 |
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| Original MPEP | 1948-1949 | ||
| First edition | Nov 1949 | ||
| Rev. 1 | Nov 1950 | ||
| Rev. 2 | Dec 1951 | ||
| Rev. 3 | May 1952 | ||
| Second edition | Nov 1953 | ||
| Rev. 1 | April 1955 | ||
| Rev. 2 | June 1956 | ||
| Rev. 3 | June1957 | ||
| Rev. 4 | July 1958 | ||
| Third edition | Nov 1961 | ||
| Rev. 1 | Jan 1964 | ||
| Rev. 2 | Nov 1964 | ||
| Rev. 3 | Jan 1965 | ||
| Rev. 4 | April 1965 | ||
| Rev. 5 | July 1965 | ||
| Rev. 6 | Oct 1965 | ||
| Rev. 7 | Jan 1966 | ||
| Rev. 8 | April 1966 | ||
| Rev. 9 | July 1966 | ||
| Rev. 10 | Oct 1966 | ||
| Rev. 11 | Jan 1967 | ||
| Rev. 12 | April 1967 | ||
| Rev. 13 | July 1967 | ||
| Rev. 14 | Oct 1967 | ||
| Rev. 15 | Jan 1968 | ||
| Rev. 16 | April 1968 | ||
| Rev. 17 | July 1968 | ||
| Rev. 18 | Oct 1968 | ||
| Rev. 19 | Jan 1969 | ||
| Rev. 20 | April 1969 | ||
| Rev. 21 | July 1969 | ||
| Rev. 22 | Oct 1969 | ||
| Rev. 23 | Jan 1970 | ||
| Rev. 24 | April 1970 | ||
| Rev. 25 | July 1970 | ||
| Rev. 26 | Oct 1970 | ||
| Rev. 27 | Jan 1971 | ||
| Rev. 28 | April 1971 | ||
| Rev. 29 | July 1971 | ||
| Rev. 30 | Oct 1971 | ||
| Rev. 31 | Jan 1972 | ||
| Rev. 32 | April 1972 | ||
| Rev. 33 | July 1972 | ||
| Rev. 34 | Oct 1972 | ||
| Rev. 35 | Jan 1973 | ||
| Rev. 36 | April 1973 | ||
| Rev. 37 | July 1973 | ||
| Rev. 38 | Oct 1973 | ||
| Rev. 39 | Jan 1974 | ||
| Rev. 40 | April 1974 | ||
| Rev. 41 | July 1974 | ||
| Rev. 42 | Oct 1974 | ||
| Rev. 43 | Jan 1975 | ||
| Rev. 44 | April 1975 | ||
| Rev. 45 | July 1975 | ||
| Rev. 46 | Oct 1975 | ||
| Rev. 47 | Jan 1976 | ||
| Rev. 48 | April 1976 | ||
| Rev. 49 | July 1976 | ||
| Rev. 50 | Oct 1976 | ||
| Rev. 51 | Jan 1977 | ||
| Rev. 52 | April 1977 | ||
| Rev. 53 | July 1977 | ||
| Rev. 54 | Oct 1977 | ||
| Rev. 55 | Jan 1978 | ||
| Rev. 56 | April 1978 | ||
| Fourth edition | June 1979 | ||
| Rev. 1 | Jan 1980 | ||
| Rev. 2 | April 1980 | ||
| Rev. 3 | July 1980 | ||
| Rev. 4 | Oct 1980 | ||
| Rev. 5 | Jan 1981 | ||
| Rev. 6 | June 1981 | ||
| Rev. 7 | July 1981 | ||
| Rev. 8 | Oct 1981 | ||
| Rev. 9 | Sept 1982 | ||
| Fifth edition | Aug 1983 | ||
| Rev. 1 | Oct 1985 | ||
| Rev. 2 | Dec 1985 | ||
| Rev. 3 | May 1986 | ||
| Rev. 4 | Oct 1986 | ||
| Rev. 5 | July 1987 | ||
| Rev. 6 | Oct 1987 | ||
| Rev. 7 | Dec 1987 | ||
| Rev. 8 | May 1988 | ||
| Rev. 9 | Sept 1988 | ||
| Rev. 10 | Jan 1989 | ||
| Rev. 11 | April 1989 | ||
| Rev. 12 | July 1989 | ||
| Rev. 13 | Nov 1989 | ||
| Rev. 14 | Nov 1992 | ||
| Rev. 15 | Aug 1993 | ||
| Rev. 16 | March 1994 | ||
| Sixth edition | Jan 1995 | ||
| Rev. 1 | Sept 1995 | ||
| Rev. 2 | July 1996 | ||
| Rev. 3 | July 1997 | ||
| Seventh edition | July 1998 | ||
| Rev. 1 | Feb 2000 | ||
| Eighth edition | Aug 2001 | ||
| Rev. 1 | Feb 2003 | ||
| Rev. 2 | May 2004 | ||
| Rev. 3 | Aug 2005 | ||
| Rev. 4 | Oct 2005 | ||
| Rev. 5 | Aug 2006 | ||
| Rev. 6 | Sept 2007 | ||
| Rev. 7 | July 2008 | ||
| Rev. 8 | July 2010 | ||
| Rev. 9 | August 2012 | ||
| Ninth edition | |||
| E9R-11.2013 | March 2014 | ||
| E9R-07.2015 | Oct 2015 | ||
| E9R-07.2015 | Nov 2015 | ||
| E9R-08.2017 | Jan 2018 | ||
| E9R-10.2019 | June 2020 | ||
| E9R-07.2022 | Feb 2023 | ||
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