Oren Weiner > Liad Whatstein & Co. Law Office > Tel Aviv, Israel > Lawyer Profile

Liad Whatstein & Co. Law Office
TEL AVIV 6473926




Oren has more than two decades of experience in all aspects of IP law.
Oren represented major international clients from diverse industries and litigated complex patent and trademark cases at the Patent Office as well as at the District Courts and the Supreme Court. Oren possesses a broad legal expertise and is considered a top expert in Israel’s intricate Patent Term Extension system.


English, Hebrew, Arabic


The Hebrew University of Jerusalem (LL.B, 1997)
The Bar-Ilan University (MBA, cum laude, 2003)


Oren is an avid reader of history books and enjoys traveling.

Lawyer Rankings

Israel > Healthcare and life sciences

Rated by clients as ‘one of the top, if not the top’ IP firms in Israel, Liad Whatstein & Co. Law Office is well-known for handling the full spectrum of contentious and non-contentious patent-related issues across the life sciences and healthcare sector. The ‘technically excellent, diligent and dedicated’ Liad ‎ Whatstein and Amira Mangelus jointly lead the team. Primarily acting for global pharma companies, Whatstein is an IP litigator who has deep knowledge of healthcare regulatory issues and blockbuster drug lifecycle management. Mangelus is an expert in patent litigation, handling infringement actions and patent application prosecutions. Oren Weiner has exceptional expertise in patent term extensions, regularly appearing before the Israeli Patent offices and district courts.

Israel > Intellectual property > Intellectual property: disputes

Liad Whatstein & Co. Law Office leverages its litigation expertise to assist some of the leading international pharmaceutical companies, as well as clients from the defence and communication technologies sectors, on both complex IP litigation and non-contentious issues. Practice co-head Liad ‎ Whatstein is a go-to choice for several pharmaceutical companies in complex litigation cases, and fellow co-head Amira Mangelus is likewise noted for her expertise in patent litigation in the life sciences space. The team also includes patent litigation and technology expert Matti Michel and patent term extension specialist Oren Weiner.

Israel > Intellectual property > Intellectual property: filing/prosecution

An array of leading domestic and global pharmaceutical companies routinely turn to Liad Whatstein & Co. Law Office for its experience in filing and prosecuting patents. The team also displays significant expertise in managing trademark portfolios on behalf of major media and entertainment companies. Alongside his specialism in patent prosecution, Liad ‎ Whatstein is also noted for handling trademarks disputes, while Amira Mangelus is praised by clients for her ‘extensive experience in complex cross-border litigation’, most notably in the life sciences sector. Oren Weiner is an expert in the patent term extension system.

Comparative Guides

Israel: Patent Litigation November 2023 This country-specific Q&A provides an overview of Patent Litigation laws and regulations applicable in Israel.