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Philip D. Segrest, Jr.

Partner

Chicago
phone: 312.526.1548
fax: 312.655.1501

email: [email protected]

Overview Experience Case Studies

Insights Events News

Outside the Office

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Overview

Philip is an experienced litigator in patent and intellectual property matters in a wide variety of technologies and a registered patent attorney with a technical background in physics and computer related technologies.

He has particular depth of experience managing pharmaceutical patent litigation under Abbreviated New Drug Act (ANDA), helping generic manufacturers bring their products to market at affordable, competitive prices. Philip also has extensive litigation and patent prosecution experience in information and computer related technologies, including data compression, e-commerce systems, business methods and other technologies in electrical, mechanical and chemical technical arts.

Philip’s litigation experience also includes all phases of patent, copyright, trademark and trade secret cases. He has prepared and prosecuted patent applications in diverse technologies, including markdown optimization, data mining, call centers, voice recognition and other areas. His litigation and counseling experience also includes general commercial litigation and government contracts. A former Federal Circuit law clerk, Philip has also briefed and/or argued dozens of appeals in federal and state courts.

Industries

Services

Appellate

Commercial Contracting

Copyrights

Generic Drug / ANDA Litigation

Intellectual Property

Intellectual Property Counseling

Intellectual Property Litigation

Litigation & Alternative Dispute Resolution

Patent Preparation & Prosecution

Pharmaceutical Manufacturers

Post-Issuance Proceedings

Software Development & Licensing

Trade Secrets & Business Information Protection

Trademarks

Recognition

The Best Lawyers in America®
- Patent Law, 2024 and 2025
Martindale-Hubbell AV Preeminent

Education

J.D., University of Alabama School of Law
B.S., University of Alabama
- Physics
B.S., University of Alabama
- Applied Mathematics

Admissions

U.S. Supreme Court
U.S. Court of Appeals, Federal Circuit
U.S. Court of Federal Claims
U.S. Court of Appeals, Seventh Circuit
U.S. District Court, Northern District of Illinois
Illinois
U.S. District Court, Middle District of Alabama
Alabama
U.S. Patent and Trademark Office

Professional Memberships and Certifications

DePaul University, Adjunct Professor, “Patent Law,” Fall Semester 2015
Federal Circuit Bar Association
American Intellectual Property Law Association
Intellectual Property Law Association of Chicago
American Bar Association
Alabama Bar Association
American Health Law Association
Association of Computing Machinery

Clerkships

The Hon. Marion T. Bennett, U.S. Court of Appeals, Federal Circuit, 1994-1995
The Hon. John P. Wiese, U.S. Court of Federal Claims, 1993-1994
The Hon. Eric G. Bruggink, U.S. Court of Federal Claims, 1992-1993

Experience

Aided client FlatWing Pharmaceuticals in demonstrating that 39 claims in 4 patents filed by competitor were unpatentable.
Aided Sigmapharm Laboratories in arguing for claim construction. Court adopted proposed construction verbatim.
Represented Apotex Inc. and Apotex Corp. on their generic risedronate monthly product against patent infringement allegations by Warner-Chilcott Co. LLC, Hoffmann-La Roche Inc. and The Proctor & Gamble Co. Obtained summary judgment of non-infringement on U.S. Patent No. 6,165,513 and summary judgment of invalidity for obviousness on certain claims in U.S. Patents Nos. 7,192,938 and 7,718,634, Warner Chilcott Co., LLC v. Teva Pharm. USA, Inc., 37 F. Supp. 3d 731 (D. Del. 2014), overcame motion for a temporary injunction and enabled timely product launch, and prevailed in upholding results at the Federal Circuit as counsel arguing appeal on behalf of multiple co-defendants, Warner Chilcott Co., LLC v. Teva Pharm. USA, Inc., 594 F. App’x 630 (Fed. Cir. 2014)
Represented Teh Seng Pharmaceutical Mfg. Co. Ltd. and TWi Pharmaceuticals Inc. in a patent infringement case alleging their generic version of Endo’s Lidoderm transdermal patch infringed U.S. Patents Nos. 5,741,510, 6,096,334, and 5,827,529. The case was favorably settled on the eve of trial. Endo and Teikoku Pharma v. TWi and Teh Seng, Case No. 12¬848 (D. Del. 2014)
Represented Apotex Inc. and Apotex Corp on their generic ibandronate monthly product against patent infringement allegations by Hoffmann-La Roche Inc. Overcame preliminary injunction motion and enabled timely product launch, obtained summary judgment of invalidity for obviousness on U.S. Patents Nos. 7,410,957 and 7,718,634, and prevailed in upholding results at the Federal Circuit on appeal. Hoffmann-La Roche Inc. v. Apotex Inc., 748 F.3d 1326 (Fed. Cir.), cert. denied, 135 S. Ct. 878, 190 L. Ed. 2d 704 (2014)
Represented BSN, Inc., on its nutritional supplement products against allegations by Iovate Health Science, Inc., and University of Florida Research Foundation, Inc., that it infringed U.S. Patent No. 6,100,287. Argued Federal Circuit appeal that prevailed in upholding judgment that the patent was invalid as anticipated by advertisements published in muscle magazines. Iovate Health Sciences, Inc. v. Bio-Engineered Supplements & Nutrition, Inc., 586 F.3d 1376 (Fed. Cir. 2009)
Represented Apotex, Inc., and Apotex Corp. on their generic ofloxacin otic ear drop product against allegations by Daiichi Sankyo, Inc., that it infringed U.S. Patent No. 5,401,741. Prevailed on appeal at the Federal Circuit in striking down the patent as invalid on grounds of obviousness. Daiichi Sankyo v. Apotex, 501 F.3d 1254 (Fed. Cir. 2007)
Represented Apotex, Inc., and Apotex Corp. on appeal defending their generic amlodipine besylate product against allegations by Pfizer, Inc., that it infringed U.S. Patent No. 4,879,303. Prevailed on appeal at the Federal Circuit in striking down the patent as invalid on grounds of obviousness. Pfizer v. Apotex, 480 F.3d 1348 (Fed. Cir. 2007)
Represented Rockwell International Corporation on appeal defending its heavy-duty truck transmissions against allegations by Eaton Corporation that it infringed U.S. Patent 4,850,236. Prevailed on appeal at the Federal Circuit (reversing a jury verdict) that the patent was not infringed because the preamble limited the claim. Eaton Corp. v. Rockwell Int’l; 323 F.3d 1332 (Fed. Cir. 2003)
Represented Datalect Computer Services, Ltd., in obtaining an equitable adjustment (damages) for breach of a computer maintenance contract by the U.S. Army in Europe. Datalect v. Computer Servs. Ltd., v. United States, 56 Fed. Cl. 178 (2003)
Represented Conexant Systems, Inc., on their modems implementing the v.42bis data compression standard against allegations that the standard infringed U.S. Patent No. 4,366,551. Obtained summary judgment of laches (cutting off past damages), prevailed on summary judgment of non-infringement, and successfully defended result in the Federal Circuit on appeal. Holtz v. Conexant Sys., Inc., 56 F. App’x 470 (Fed. Cir. 2002)
Represented Somfy S.A. on their window blinds with a pull cord mechanism against allegations by Springs Windows Fashions Divisions, Inc., that it infringed U.S. Patent No. 5,328,113. Argued Federal Circuit appeal that reversed adverse claim construction and resulted in remand leading to a settlement on favorable terms. Somfy, S.A. v. Springs Window Fashions Div., Inc., 6 F. App’x 895 (Fed. Cir. 2001)
Represented General Electric co. on electric motors in air conditioners in suit naming multiple manufacturers throughout the industry. Prevailed on defense of laches for client in seminal case recognizing the duty of a patentee to monitor industry activity. Wanlass v. General Electric Co., 148 F.3d 1334, 46 USPQ2d 1915 (Fed. Cir. 1998)
Published cases in state court matters: Watkins v. Harper, 984 So. 2d 472 (Ala. Civ. App. 2007) (prevailed on client’s right to seek declaration to quiet title); Ex parte Verbena United Methodist Church, 953 So. 2d 395 (Ala. 2006) (prevailed on mandamus seeking change of venue for client); Scott v. Boykin, 900 So. 2d 410 (Ala. 2004) (prevailed in protecting client’s discharge as executor in probate proceedings); McClellan v. Pennington, 895 So. 2d 892 (Ala. 2004) (prevailed in protecting client’s title against attempt to impose a purchase money resulting trust); Noble v. Baker, 892 So. 2d 936 (Ala. Civ. App. 2004) (prevailed in protecting holder in due course of negotiable instrument against claim disputing consideration)

Articles | April 28, 2022

Chicago-Kent Journal of Intellectual Property: The Art of Cross-Examination in PTAB Trials

News Releases | August 15, 2024

Best Lawyers in America® Places More than 250 Husch Blackwell Lawyers in 2025 Rankings

News Releases | August 17, 2023

Best Lawyers in America® Places More than 230 Husch Blackwell Lawyers in 2024 Rankings

Media Mentions | December 22, 2022

Law360: Illinois Jury Awards $13.5M In Farm Equipment Patent Trial (log-in required)

News Releases | October 15, 2021

Husch Blackwell Scores Victory for Sigmapharm in Hatch-Waxman Litigation

Husch Blackwell successfully defended Sigmapharm Laboratories, LLC in connection with its application for approval of a generic version of the antidepressant vortioxetine.

News Releases | August 31, 2020

Husch Blackwell Scores Victory for FlatWing Before the Federal Circuit