Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Siena, IT ranks #2,314 worldwide for total patents filed all time, with 1,355 patents from 315 inventors. Leading employers of inventors based in Siena, IT include Novartis Ag, Glaxosmithkline Biologicals Sa, Atop S.P.A..

Showing 1–50 of 315 inventors

Rank Inventor Primary Company Patents
1 Rino Rappuoli Novartis Ag 85
2 Mariagrazia Pizza Glaxosmithkline Biologicals Sa 82
3 Vega Masignani Novartis Ag 61
#4 Maria Scarselli Glaxosmithkline Biologicals Sa 59
#5 Massimo Ponzio Atop S.P.A. 56
#6 Gianfranco Stratico 53
#7 Paolo Costantino Glaxosmithkline Biologicals Sa 35
#8 Marzia Monica Giuliani Glaxosmithkline Biologicals Sa 29
#9 Mario Contorni Glaxosmithkline Biologicals Sa 20
#9 Russell Thomas Merck 20
#11 Giulio Ratti Novartis Vaccines And Diagnostics 19
#11 Immaculada Margarit Y Ros Novartis Ag 19
#13 Massimo Porro Biosynth S.R.L. 18
#13 Renata Grifantini Eniricerche S.P.A. 18
#13 Marirosa Mora Glaxosmithkline Biologicals Sa 18
#13 Gabrio Roncucci L. Molteni & C. Di Fratelli Alitti—Societa Di Esercizo S.P.A. 18
#17 Roberto Olivieri Snamprogetti S.P.A. 15
#18 Maurizio Botta Universita' Degli Studi Di Siena 14
#18 Maurizio Comanducci Glaxosmithkline Biologicals Sa 14
#18 Maria Rosaria Romano Glaxosmithkline Biologicals Sa 14
#21 Maria Rita Fontana Glaxosmithkline Biologicals Sa 13
#22 Laura Serino Glaxosmithkline Biologicals Sa 12
#23 Domenico Maione Glaxosmithkline Biologicals Sa 11
#24 Francesca Micoli Glaxosmithkline Biologicals Sa 10
#25 Giovanni Neri Philogen S.P.A. 9
#25 Claudio Bechini I.M.A. Industria Macchine Automatiche S.P.A. 9
#25 Antonello Covacci Chiron S.P.A. 9
#28 Domenico Prattichizzo Universita' Degli Studi Di Siena 8
#28 Marco Pieri Nuovo Pignone Srl 8
#28 Franco Meiattini Diesse Diagnostica Senese S.P.A. 8
#28 Fabrizio Manetti Universita' Degli Studi Di Siena 8
#28 Lorenzo Tarli Glaxosmithkline Biologicals Sa 8
#28 Fabio Maria Sabbatini Versalis S.P.A. 8
#34 Francesco Norelli Novartis Ag 7
#34 Piero Pileri Novartis Ag 7
#34 Nicola Groth Seqirus Uk Limited 7
#34 Barbara Baudner Glaxosmithkline Biologicals Sa 7
#34 Cira Daniela Rinaudo Glaxosmithkline Biologicals Sa 7
#39 Francesco Doro Johnson & Johnson 6
#39 Francesco Cocola Diesse Diagnostica Senese S.P.A. 6
#39 Manuele Martinelli Glaxosmithkline Biologicals Sa 6
#39 Jean-Denis Docquier Da Volterra 6
#39 Luigi Fiaschi Glaxosmithkline Biologicals Sa 6
#39 Roberto Adamo Glaxosmithkline Biologicals Sa 6
#39 Susanna Campagnoli Eniricerche S.P.A. 6
#39 Oretta Finco Glaxosmithkline Biologicals Sa 6
#47 Angela Bardotti Novartis Ag 5
#47 Paolo Neri Istituto Sieroteropico E. Vaccinogeno Toscano Sclavo S.P.A. 5
#47 Mario F. Tecce Sclavo Spa 5
#47 Rolando Barbucci 5