
Carl Otto Barth, Dipl.-Ing., Patent Attorney (D, CH)
European Patent, Trademark, and Design Attorney
Studies of General Electrical Engineering at Technical University of Darmstadt, Germany
1967 | Patent Department of IBM Germany in Böblingen, Germany |
1972 | German Patent Attorney Examination |
1976 | Patent Department of IBM USA in Boulder, Colorado, USA |
1977 | US Patent Bar Exam |
1979 – 1998 | various IP management positions at IBM in Munich and Böblingen, Germany, and Rüschlikon, Switzerland |
1998 | Partnership Barth & Partner, Patent Attorneys, in Adliswil/Zürich, Switzerland |
2002 | Supralocal Partnership ABACUS Patentanwälte in Nagold, Germany, and Adliswil/Zürich, Switzerland |

Peter Klocke, Dipl.-Ing., Patent Attorney (Germany)
European Patent, Trademark, and Design Attorney
Studies of General Electrical Engineering at Technical University of Darmstadt, Germany
1981 | Patent Department of W.C. Heraeus GmbH in Hanau, Germany |
1983 | Training with Goertz, Fuchs, Harders, Patent Attorneys in Wiesbaden, Germany |
1985 | European Qualifying Examination |
1986 | German Patent Attorney Examination |
1986 | Patent Department of Mann & Hummel GmbH in Ludwigsburg, Germany |
1988 | Intellectual Property Department of IBM Germany in Böblingen, Germany |
1993 | Partner at predecessor of Klocke & Späth, Patent Attorneys in Horb, Germany |
2002 | Supralocal Partnership ABACUS Patentanwälte in Nagold, Germany, and Adliswil/Zürich, Switzerland |

Dieter Späth, Dipl.-Ing., Patent Attorney (Germany)
European Patent, Trademark, and Design Attorney
Studies of Mechanical Engineering at Technical University of Stuttgart, Germany
1990 | Training with Kohler Schmid und Partner, Patent Attorneys in Stuttgart, Germany |
1993 | German Patent Attorney Examination |
1994 | European Qualifying Examination |
1995 | Partner at Klocke & Späth, Patent Attorneys in Horb, Germany |
2002 | Supralocal Partnership ABACUS Patentanwälte in Nagold, Germany, and Adliswil/Zürich, Switzerland |