More About Us


Diligens Intellectual Property handles all aspects of intellectual property in Romania and abroad. Considering that protecting intellectual property is crucial to the success of the business, we provide innovative solutions across the full spectrum of intellectual property law. Our aim is to assist individuals and organizations to maximize the potential of their intellectual property and to minimize the risks faced from exposure to third party rights.

Our enthusiastic team of young professionals with good academic and practice background provides a comprehensive intellectual property services.

The Founders

Cristian Nastase
European Patent and Trademark Attorney

Prior to founding Diligens Intellectual Property, Cristian Nastase was a partner in a reputable IP firms. Over almost ten years of professional activity, Cristian Nastase has advised foreign and Romanian clients in prosecution of IP rights; enforcement of IP rights; licensing, franchising, assignments, coexistence agreements; negotiation, alternative dispute resolutions.

  • Phone:0723 276 056
  • Email:office@diligens.ro
  • Admission: 2007 Member of Bucharest Bar
  • Publications:
  • June 2000 - Managing Intellectual Property - Assessing trade marks - similarity
  • 2001 Managing Intellectual Property - Trademark Yearbook 2001 - Counterfeiting and remedies
  • 2007 INFORMA LAW - The co-existence of trademarks and designs in Romania
  • 2004 - till present - Contributor for INTA Madrid Practioner's Guide and Country Guide
  • 2008 - Pharmaceutical Trademarks 2009 - A Global Guide - World Trademark Review
  • Membership:
  • 2009 - INTA Member - Internet Committee
  • 2006 - till present Chair of Law Commission of the Romanian Patent Chamber
  • 2005 - ECTA Member
  • 2004 - INTA Member - Member of LRAC Committee
  • 2000 - INTA Member - Member of CTMDO Committee
  • 1999 - Member of Romanian Patent Chamber

Mirela-Bianca Nastase
European Trademark Attorney

Mirela's practice focuses on trademarks, as well as industrial design and domain name matters. She also counsels clients on clearance, maintenance and enforcement of trademarks in Romania.

  • Phone:0722 143 661
  • Email:mirela.nastase@diligens.ro
  • Admission: Trademark Agent, Romania, 2005
  • Languages: Romanian, English and Spanish
  • Education: Faculty of Management-Marketing, University of Bucharest, Romania - 2001

Madalina Merisan
Avocat colaborator

  • Phone:0743 048 582
  • Email:madalina.merisan@diligens.ro