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Dr. Sami Karahan

Dr. Sami Karahan

Foreign Legal Consultant (Turkey)


Ridgewood, New Jersey


201-670-0006 (x107)




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Mr. Sami Karahan studied law at Istanbul University Law School in Turkey from 1981 to 1985. He then graduated from LLM in 1987, before earning his Ph.D. at Istanbul University Law School in 1991. He worked at Selcuk University, Istanbul Commerce University, and Marmara University as a Professor. He gave lectures to undergraduate and graduate students from 1986 to 2016. Mr. Karahan became the head of the Department of Commercial Law, the head of the Department of Private Law, and the Vice-Rector.

After crafting his thesis in 1986 on ‘Trademark Models’, Mr. Karahan later completed his dissertation in 1991 on ‘Privileged Shares and Protections in Joint-Stock Companies’. As an associate professor, he conducted research on “Liquidation in Joint-Stock Companies” in 1996. Mr. Karahan then published research on ‘Invalidation Proceedings in Trademark Law’ and became a professor in 2004. He traveled to Germany twice in 1986 and then again from 1992 to 1993 for educational purposes. He founded the Karahan Law Firm that used to have three offices in three big cities (İstanbul, Ankara, and Konya) in Turkey. This firm used to have more than 100 employees including attorneys.

Sami Karahan has published 15 books and approximately 100 articles. Most of them are on commercial law and intellectual property law. Anyone can reach those at,,, and He has written many expert witness reports for the famous US and other international brands, such as Nike, Adidas, US Polo, and Zara.

Mr. Karahan left Turkey because of political reasons. He immigrated to the United States to avoid persecution by the current political regime. He has been living in the United States since June of 2016. Sami has been working in the NPZ law firm as a counsel since December 2017.

Sami Karahan’s main professions are intellectual property law and commercial law. After leaving Turkey, he started working on immigrant law and human rights.

Areas of expertise:

  • Intellectual Property Law
  • Commerce Law
  • Immigration Law
  • Human Rights

Published Books:

Most of them are on commercial law and intellectual property law

  • Privileged Shares and Protections in Joint-Stock Companies, Istanbul 1991.
  • Commercial Law Practices (co-authors: Rıza Ayhan and İbrahim Arslan) 3rd Edition, Konya 2010. 
  • Liquidation in Joint-Stock Companies, Konya 1998.
  • New Trademark Law and Relevant Legislations, 2nd Edition, Konya 2000. 
  • Invalidation Proceedings in Trademark Law, Konya 2002.
  • Turkish Commercial Code and Relevant Legislations (co-authors: İbrahim Arslan and Mücahit Ünal), 4th Edition, Konya 2011. 
  • The Knowledge of Basic Law (co-authors: Ayan, Mehmet; Arslan, İbrahim; Atar, Yavuz; Sümer, Haluk Hamdi and Ulukapı, Ömer), 6th Edition, Konya 2015.
  • General Principles of Intellectual Property Law (co-authors: Att.Dr.Cahit Suluk, Asst.Prof.Dr.Tahir Saraç and Att.Dr.Temel Nal), 4th Edition, Istanbul 2015.
  • Law of Commercial Enterprise, 27th Edition, Konya 2015.
  • Corporate Law, Konya 2012 (Editor: Prof.Dr.Sami Karahan)
  • Commercial Law I, Anadolu University Publications, Eskişehir 2015 (Editor: Prof.Dr.Sami Karahan/Doç.Dr.Ayşe Tülin Yürük- Also the Author of the First Five Chapters).
  • Commercial Law II, Anadolu University Publications, Eskişehir 2013 (Editor: Prof.Dr.Sami Karahan/Asst.Prof.Dr.Hülya Göktepe).
  • Law of Commercial Papers (co-authors: Bozgeyik, Hayri; Arı, Zekeriyya; Ünal, Mücahit), 2nd Edition, Konya 2014.
  • Commercial Law - Practical Works, İstanbul 2015 (Editor: Prof.Dr. Sami Karahan)
  • Trademark Law Legislations - with Court Practices and Notes, Istanbul 2016.

Administration Functions:

  • 1- Head of Civil Law Department (2004-2008)
  • Member of Faculty Administration Board (2004-2008)
  • Member of University Senate (2004-2008; 2009- …)
  • Vice-Dean (2006)
  • Vice-Chancellor (2009-2010)
  • Head of Commercial Law Department (2011-….)

Other Academic Activities:

  • Ministry of Justice, Member of Commission of Turkish Commercial Law Draft (1999-2005)
  • Consultant of Konya Chamber of Commerce (1996-2009)
  • Arbitrator of Turkish Capital Markets Association (2005- ..)
  • Referee of Intellectual Property and Competition Law Journal (Ankara Bar Association) (2004- ..)
  • Referee of Intellectual Property Law Journal (2006-…),
  • Referee of Selçuk University Law Faculty Journal (2003-…),
  • Referee of Istanbul Ticaret University Social Sciences Journal 2009-..)
  • Member of Intellectual Property Commission of Istanbul Chamber of Commerce (2009-….)
  • Member of Istanbul Chamber of Commerce Arbitration Board (2010- ….)


  • German
  • Turkish

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