red line
inner top line


Cristian Nastase
Cristian Nastase
Attorney-at-law, Trademark & Patent Agent, European Patent Attorney
Mr. Cristian Nastase is our official representative in Romania. He has over 15 years of experience in the field of intellectual property and corporate legal matters.

Cristian is admitted before the Romanian Intellectual Property Office, European Patent Office and EUIPO. Cristian is also authorized to represent clients before all court instances in Romania.
He advises and represents clients in IP issues in the field of energy and natural resources, medicine, biological, food technology, medical machinery and products as well as the FMCG industry. Cristian has in-depth knowledge in all areas of IP and advises clients on prosecution and enforcement matters in particular clearance searches, construing branding strategies, opposition and cancellation actions, anti-counterfeiting, unfair competition actions.


Prior to founding Diligens Intellectual Property SRL, Cristian was a partner in two reputable IP law firms in Romania. During that time Cristian has advised foreign and Romanian clients in a wide range of IP rights including licensing, franchising, assignments, co-existence agreements, negotiations and alternative dispute resolution matters.

Since 2004 Cristian is also a contributor to the INTA Madrid Practioner’s Guide and Country Guide. He is also an active member at INTA where he has participated over the years in various committees such as the Legislation and Regulation Committee, Community Trademark and Design Office Practices Committee and Internet committees. Since 2006 Cristian is the chair of the Law Commission at the Romanian Patent Chamber.
Cristian speaks Romanian, English and Spanish languages.

1999 - 2004 LL.B., Faculty of Law, Ecological University of Bucharest
1992 – 1996 Degree in Engineering, Polytechnic University of Bucharest, Romania
1997-1998 Master degree in Radioprotection and Nuclear Security, joined program between the Polytechnic University of Bucharest and Nuclear Safety Council (CSN), Madrid, Spain
Member of Bucharest Bar Association since 2007
Pharmaceutical Trademarks 2009 - A Global Guide, World Trademark Review 2009

The Co-existence of Trade Marks and Designs in Romania, Informa Law 2007
Counterfeiting and Remedies, Trademark Yearbook 2001, Managing Intellectual Property 2001
Assessing Trade Marks’ Similarity, Managing Intellectual Property June 2000 

111 Dimitar Petkov Blvd.
Office 3-6, Fl. 3
Sofia 1309
  Google Maps