Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Sofia, BG ranks #1,330 worldwide for total patents filed in 2018, with 100 patents from 77 inventors. Leading employers of inventors based in Sofia, BG include Atmel, Wacom Co., Activbody.

Showing 1–50 of 77 inventors

Rank Inventor Primary Company Patents
1 Luben Hristov Atmel 6
2 Branimir Angelov Wacom Co. 5
3 Ivo Kostadinov Yanev Activbody 3
#4 Constantin Staykoff 2
#4 Petio Petev Sap Ag 2
#4 Boriana Mladenova Wacom Co. 2
#4 Asen Alexandrov Broadcom 2
#4 Ilko Dragoev Broadcom 2
#4 Kiril Petkov 2
#4 Petko Petkov 2
#4 Danail Grigorov Broadcom 2
#4 Stoyan Zhivkov Boshev Sap Se 2
#4 Ivaylo Petkov Strandzhev Broadcom 2
#4 Galin Galchev Sap Ag 2
#4 Stefan Yotov Wacom Co. 2
#16 Pavel Mitkov Dobrev Broadcom 1
#16 Tsvetan Stoyanov Sap Se 1
#16 Daniel Atanasov 1
#16 Vasily Semyonov Acronis International Gmbh 1
#16 Andon Dimitrov Filtchev 1
#16 Kiril Asenov Ninov Unknown 1
#16 Viktor Kalvachev Activbody 1
#16 Ivo Ivanov Bonev Gentex 1
#16 Ivan Igorov Lesov Saint-Gobain Isover 1
#16 Georgi Gerginov Sap Ag 1
#16 Plamen Chavdarov Stoyanov Gentex 1
#16 Aleksandar Petkov Sap Se 1
#16 Bisser Jivkov Paskalev Sap Se 1
#16 Vladimir Miroshkin Acronis International Gmbh 1
#16 Stoil Rangelov Trifonov International Power Supply Ad 1
#16 Dimitar Andreev Johnson Controls Automotive Electronics Sas 1
#16 Georgi Sabev Sap Se 1
#16 Christo Tzachev Tzachev 1
#16 Dimitar Mihaylov Sap Se 1
#16 Todor Kostadinov TODOROV Broadcom 1
#16 Milen Manov Sap Se 1
#16 Andrey Atanasov Kolakov 1
#16 Stefan Petrov Sap Se 1
#16 Bojidar Kadrev Sap Se 1
#16 Velichka Ilieva Apostolova-Dimova Unknown 1
#16 Rumyana Gueorguieva Konstantinova Unknown 1
#16 Evtimia Ivanova Stefanova Unknown 1
#16 Konstantin Petrov Gencell 1
#16 Peter K. Matov Sap Ag 1
#16 Radoslav Ivanov Sap Se 1
#16 Mariya Miteva Broadcom 1
#16 Shenol Hulmi Yousouf Sap Se 1
#16 Boris Savov Broadcom 1
#16 Alexander Stoilov Rangelov International Power Supply Ad 1
#16 Shenol Hasan Johnson Controls Automotive Electronics Sas 1