Oya Yalvac

Partner at Deriş Attorney-at-Law Partnership

Oya Yalvac is one of few Turkish professionals to have passed the European qualifying examination. She has worked in the pharmaceutical industry as an in-house patent attorney for more than 10 years and specialises in patent litigation – namely, infringement, invalidity actions and actions for declaration of non-infringement.

Ms Yalvac is also an adviser and expert for local R&D and innovation centres, as well as the technology transfer offices of Turkish universities.

Ms Yalvac has in-depth experience in patent oppositions and freedom-to-operate analyses. She has occasionally been appointed as a court expert for patent disputes before the Turkish IP courts.


  • Counselling an internationally known apparel and advanced textile company on a patent infringement action
  • Counselling on patent litigation for SEPs
  • Counselling an internationally known chemical company on a patent infringement action
  • Counselling on patent litigation for 3D printing technology
  • Drafting patents for a leading textile and fibre company


Ms Yalvac holds a BSc in molecular biology and genetics from Boğaziçi University.


Ms Yalvac is fluent in English.


Ms Yalvac recently published “Federated European Patent Register – an overview” on the International Law Office.

Admissions and memberships

  • European patent attorney
  • Chartered patent and trademark attorney 
  • Turkish representative of the Biotechnology Committee before the Institute of Professional Representatives before the European Patent Office (epi)
  • epi tutor

Professional associations

  • epi

Firm details

Deriş Attorney-at-Law Partnership
Inebolu Sokak 5
Deris Patent Building
Setustu Kabatas
Istanbul 34427

Contact details

See firm profile