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Amster, Rothstein & Ebenstein LLP is a distinguished full-service intellectual property law firm based in New York City. With a rich history spanning over six decades (founded in 1954), the firm has established itself as a leader in protecting and enforcing intellectual property rights. They offer comprehensive legal services in patents, trademarks, copyrights, trade secrets, unfair competition, internet law, and related litigation and licensing. The firm serves a diverse clientele, ranging from individual inventors and startups to multinational corporations, across various industries including technology, pharmaceuticals, fashion, and entertainment. They are known for their deep legal expertise, strategic approach to IP management, and commitment to achieving clients' business objectives.
The New York headquarters serves as the central hub for all the firm's operations, including legal practice management, client consultations, administrative support, and strategic decision-making. It houses the majority of their attorneys and staff.
Located in a prominent Class A office building in Midtown Manhattan, offering modern facilities, advanced technology infrastructure, and convenient access for clients and legal professionals.
The firm fosters a collaborative, intellectually rigorous, and client-centric work culture. Emphasis is placed on mentorship, professional development, and maintaining a high standard of legal excellence in a collegial environment.
The headquarters' location in New York City, a global center for commerce, finance, and innovation, positions the firm at the heart of major legal and business activities, facilitating direct engagement with a diverse client base and the legal community.
While physically headquartered in New York, Amster, Rothstein & Ebenstein LLP maintains a significant global reach by representing clients in intellectual property matters worldwide. They manage international patent and trademark portfolios, engage with foreign associates and counsel, and navigate the complexities of cross-border IP enforcement and litigation. Their expertise supports clients in protecting their innovations and brands in key markets across the globe.
90 Park Avenue, 21st Floor
New York
NY
USA
Address: Based on publicly available information, Amster, Rothstein & Ebenstein LLP operates primarily from its New York City headquarters and does not list other official branch office locations. Their services are provided nationally and internationally from this central hub.
N/A - Operations are centralized. The firm's reach is not defined by multiple physical offices but by their expertise and ability to handle IP matters globally.
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As of April 2025, Amster, Rothstein & Ebenstein' leadership includes:
Amster, Rothstein & Ebenstein has been backed by several prominent investors over the years, including:
In the past 12 months, Amster, Rothstein & Ebenstein LLP announced promotions to Counsel. Specific top-level executive (e.g., Managing Partner) hires or exits are not frequently publicized unless significant changes occur. Law firms typically see movements at the Partner and Counsel levels.
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Amster, Rothstein & Ebenstein LLP likely utilizes common professional email formats. The most probable format combines the first initial with the last name, or the full first name and last name separated by a dot, followed by '@arelaw.com'.
flast@arelaw.com (e.g., jdoe@arelaw.com) or first.last@arelaw.com (e.g., jane.doe@arelaw.com)
Format
alocicero@arelaw.com
Example
90%
Success rate
arelaw.com (Firm Website) • January 8, 2024
Amster, Rothstein & Ebenstein LLP announced the promotion of Mary L. Grieco and Mark A. Berube to the position of Counsel, effective January 1, 2024. These promotions recognize their significant contributions to the firm and their expertise in intellectual property law....more
arelaw.com (Firm Website) / Best Lawyers • August 17, 2023
Multiple attorneys from Amster, Rothstein & Ebenstein LLP were recognized in the 2024 edition of The Best Lawyers in America®. This recognition is based on peer review and highlights the firm's continued excellence in various intellectual property law practice areas....more
arelaw.com (Firm Website) / Super Lawyers • October 26, 2023
Several attorneys from Amster, Rothstein & Ebenstein LLP were named to the 2023 New York Metro Super Lawyers and Rising Stars lists. This distinction acknowledges attorneys who have attained a high degree of peer recognition and professional achievement....more
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