Robert S. Silver

Robert S. Silver: Attorney with Caesar Rivise, PC AV stamp icon
  • Caesar Rivise, PC
  • 12th Floor, 1635 Market Street, Philadelphia, PA 19103
    View Robert S. Silver's office location
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Attorney Awards


One of the most active intellectual property litigators in the country and Chairperson of the firm’s Litigation Department and ANDA Litigation Team, Robert Silver represents global and U.S. companies in a wide range of litigation. His litigation practice as lead counsel for large, world-wide generic companies has emphasized complex suits involving Abbreviated New Drug Applications (ANDA) containing Paragraph IV challenges under the Hatch-Waxman Act. Mr. Silver counsels clients on ANDA preparation and strategies and has prepared, tried, argued and settled ANDA litigation cases all over the country. Mr. Silver was also responsible for assisting a generic client launch the most successful and profitable at-risk launch in history with close to $1 billion in sales made in 5 days.

Awards & Recognition

• Who’s Who Legal: Patents 2018-2019

• Best Lawyers in America, 2018-2019

• Pennsylvania Super Lawyer, 2004-2018

• Martindale Hubbell AV Preeminent Rated

• Chambers USA Top Ranked in Intellectual Property, 2010-2016

• Senior Fellow Litigation Counsel of America, The Trial Lawyer Honorary Society

• IAM Patent 1000 Ranked Attorney, 2014-2019

• Top Attorneys in Pennsylvania Philadelphia Magazine 2018-2019

• Best Lawyers in Pennsylvania 2019 Wall Street Journal

• 2019 Global Law Experts IP Litigation Law Expert

• The Actors Fund 2018 Encore Award for Performing Arts commitment

• Trial Law Institute and Diversity Law Institute Member

Industries Served

• Biomedical

• Biotechnology

• Chemical

• Mechanical

• Pharmaceuticals

Related Representative Matters

• Sanofi-Aventis, Sanofi-Synthelabo, Inc., and Bristol-Myers Squibb Sanofi Pharmaceuticals Holding Partnership v. Apotex, Inc., represented generic in ANDA litigation on Plavix® involving largest at risk launch in history

• Roxane Labs Inc. v. Invagen Inc., successfully represented defendant generic company in transferring case from Ohio to NJ, defeated Preliminary Injunction, affirmed on appeal and obtained stipulation of non-infringement, affirmed on appeal, in suit by another generic regarding calcium acetate tablets (PhosLo® brand) and ultimately awarded client $2 million in attorney fees finding the case “exceptional”

• Genzyme v. Pentech Pharmaceuticals, Inc. represented generic in ANDA litigation on Hectorol® invalidating 2 Orange Book listed patents, with third patent being delisted as a result of suit

• Biovail Laboratories, Inc. v. Torpharm. Inc., successfully represented generic company in ANDA litigation involving Tiazac® (diltiazem hydrochloride)

Litigation Counsel of America.

Areas of Practice (16)

  • Intellectual Property
  • Patent
  • Trademark
  • Copyright
  • Unfair Competition
  • Biotechnology
  • Chemical Pharmaceutical and ANDA Litigation
  • ANDA Litigation
  • Due Diligence
  • International Patent Applications
  • Invalidity Opinions
  • Litigation
  • Prosecution
  • Patentability Opinions
  • Reexaminations
  • Trademark Prosecution

Education & Credentials

Contact Information:
215-874-6593  Phone
215-567-2010  Phone
215-751-1142  Fax
University Attended:
Boston College, B.S., Chemistry, 1980; Boston College, M.S., Chemistry, 1982
Law School Attended:
Villanova University Law School, J.D., 1988
Year of First Admission:
registered to practice before U.S. Patent and Trademark Office; United States District Court for the Western District of Michigan; United States District Court for the Eastern District of Pennsylvania; United States Court of Appeals for the Third Circuit; United States Court of Appeals for the Federal Circuit; United States Court of Appeals for the District of Columbia Circuit; United States Supreme Court; 1988, Pennsylvania
Philadelphia, Pennsylvania and American Bar Associations; Philadelphia Intellectual Property Law Association.
Birth Information:
Bridgeport, Connecticut, April 24, 1958
Payment Information:
  • Credit cards accepted
  • Accepts Visa, MasterCard, American Express and Discover

Peer Reviews

A Martindale-Hubbell Peer Rating reflects a combination of achieving a Very High General Ethical Standards rating and a Legal Ability numerical rating.

*Peer Reviews provided before April 15, 2008 are not displayed.

Philadelphia, Pennsylvania

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