Alexander Ilg

Ger­man Patent Attor­ney, Euro­pean Patent Attor­ney, Euro­pean Patent Lit­i­ga­tor (UPC), Dipl.-Ing.


Main areas of practice

  • Patents, util­i­ty mod­els and trademarks
  • Pros­e­cu­tion, oppo­si­tion and appeal proceedings
  • Infringe­ment, can­cel­la­tion and inval­i­da­tion proceedings
  • Free­dom-to-oper­ate and due dili­gence analyses
  • Valid­i­ty and infringe­ment opinions

Dipl.-Ing. Alexan­der Ilg has been work­ing in the field of IP law since 2015. Since 2021, he has been a pro­fes­sion­al rep­re­sen­ta­tive before the Euro­pean Patent Office (EPO) and a Ger­man Patent Attor­ney since 2022. He has been a pro­fes­sion­al rep­re­sen­ta­tive before the Euro­pean Union Intel­lec­tu­al Prop­er­ty Office (EUIPO) since 2022. In 2024, he was admit­ted as Euro­pean Patent Lit­i­ga­tor (UPC) before the Uni­fied Patent Court.

Technical fields

  • Mechan­i­cal engi­neer­ing, inter alia, mechan­ics, pneu­mat­ics as well as con­trol and reg­u­la­tion technology
  • Auto­mo­tive tech­nol­o­gy, inter alia, elec­tri­cal and autonomous vehi­cles, brake and steer­ing systems
  • Ener­gy tech­nol­o­gy, inter alia, inter­nal com­bus­tion engines
  • Addi­tive man­u­fac­tur­ing, inter alia, 3D printing
  • Com­put­er-imple­ment­ed inven­tions and software
  • Med­ical tech­nol­o­gy, inter alia, implants and neurostimulation
  • Agri­cul­tur­al technology


  • Stud­ies of mechan­i­cal engi­neer­ing (Dipl.-Ing. Univ.) at the Karl­sruhe Insti­tute of Tech­nol­o­gy (KIT), spe­cial­is­ing in ener­gy technology
  • Diplo­ma the­sis in the field of waste heat recov­ery stud­ies in sub­stan­tial­ly sta­tion­ary inter­nal com­bus­tion engines by organ­ic Rank­ine cycles (ORC)
  • Euro­pean Qual­i­fy­ing Exam­i­na­tion before the Euro­pean Patent Office
  • Train­ing as a Ger­man Patent Attor­ney at DTS, includ­ing dis­tance learn­ing stud­ies “Law for Patent Attor­neys” at the Dis­tance-Learn­ing Uni­ver­si­ty of Hagen, intern­ships at the Mannheim Dis­trict Court, Ger­man Patent and Trade­mark Office (DPMA) and Fed­er­al Patent Court (BPatG)
  • At DTS since Novem­ber 2015


  • Paten­tan­walt­skam­mer (Cham­ber of Patent Attorneys)
  • Euro­pean Patent Insti­tute (epi)

Foto: con­nol­ly weber, München


  • Ger­man
  • Eng­lish

Foto: con­nol­ly weber, München