Philip D. Segrest Jr.: Lawyer with Husch Blackwell LLP

Philip D. Segrest Jr.

Chicago,  IL  U.S.A.

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AV® Preeminent

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Practice Areas

  • Healthcare, Life Sciences & Pharmaceuticals
  • Intellectual Property
  • Appellate
  • Intellectual Property Counseling
  • Intellectual Property Litigation
  • Patents
  • Technology & E-Commerce
  • Trademarks & Copyrights
  • Trade Secrets
  • Government Contracts
Contact InfoTelephone: 312.526.1548
Fax: 312.655.1501
University University of Alabama, B.S., Applied Mathematics, 1988; University of Alabama, B.S., Physics, 1989
Law SchoolUniversity of Alabama School of Law, J.D., 1992
Admitted1992, Alabama; 1996, Illinois; U.S. Patent and Trademark Office; U.S. District Court, Middle District of Alabama; U.S. District Court, Northern District of Illinois; U.S. Court of Appeals, Seventh Circuit; U.S. Court of Appeals, Eleventh Circuit; U.S. Court of Appeals, Federal Circuit; U.S. Supreme Court; U.S. Court of Federal Claims

Professional Associations and Memberships
•Alabama Bar Association
•American Bar Association
•American Intellectual Property Law Association
•Association of Computing Machinery
•Chicago Bar Association
•Federal Circuit Bar Association
•Illinois State Bar Association
•Intellectual Property Law Association of Chicago
•Richard Linn American Inn of Courts


Philip's practice includes trial and appellate litigation and counseling clients in all aspects of intellectual property law. A registered patent attorney with a technical background in computer-related technologies and physics, his practical experience in patent litigation covers many technologies, including data compression, pharmaceuticals, electric motors and other mechanical, chemical and electrical arts. Philip's experience includes significant work with Abbreviated New Drug Application (ANDA) applicants in overcoming patent challenges, including related considerations in FDA approvals.

Philip's litigation experience also includes all phases of patent, copyright, trademark and trade secret cases. He has also prepared and prosecuted patent applications in diverse technologies including markdown optimization, data mining, call centers, voice recognition and other areas.

His experience also includes a broad range of other litigation and counseling including general commercial litigation and government contracts, an area in which Philip gained particular experience while clerking at the U.S. Court of Federal Claims. He has also briefed and/or argued more than two dozen appeals in state and federal courts.

Civic Involvement
•Elmore County Community Foundation, Past Board Member
•Tallassee Community Hospital Board of Directors, Past Board Member
•United Methodist Church

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

•Invalidated a patent for ofloxacin otic, allowing generic competition for Floxin Otic antibiotic eardrops. Daiichi Sankyo v. Apotex, 501 F.3d 1254 (Fed. Cir. 2007)
•Invalidated a patent for amlodipine besylate tablets, allowing generic competition for Norvasc blood pressure medicine. Pfizer v. Apotex, 480 F.3d 1348 (Fed. Cir. 2007)
•Defended a summary judgment of invalidity based on prior publication in advertisements for a body building supplement. Iovate Health v. Bio-engineered, 586 F.3d 1376 (Fed. Cir. 2009)
•Vindicated claimant's right to seek declaration quieting title to property where that claimant had not been a party to previous suit. Watkins v. Harper, 984 So. 2d 472 (Ala. Civ. App. 2007)
•Received mandamus transferring case to another venue. Ex parte Verbena United Methodist Church, 953 So. 2d 395 (Ala. 2006)
•Preserved validity of discharge of executor in probate proceedings by overcoming attempted challenge asserted in circuit court. Scott v. Boykin, 900 So. 2d 410 (Ala. 2004)
•Protected legal title holder from imposition of purchase money resulting trust. McClellan v. Pennington, 895 So. 2d 892 (Ala. 2004)
•Protected creditor in collection on check for debt of third party against defenses disputing consideration. Noble v. Baker, 892 So. 2d 936 (Ala. Civ. App. 2004)
•Established that client's heavy-duty truck transmission did not infringe competitor's patent. Eaton Corp. v. Rockwell Int'l; 323 F.3d 1332, 66 USPQ2d 1271 (Fed. Cir. 2003)
•Helped a contractor get an equitable adjustment in a computer maintenance contract with the U.S. Army in Europe. Datalect v. Computer Servs. Ltd., v. United States, 56 Fed. Cl. 178 (2003)
•Established that client's computer modems did not infringe patent asserted to cover .42bis data compression standard. Holtz v. Conexant, No. 00-1112 (Fed. Cir., Dec. 26, 2002)
•Vindicated client's right to continue pursuit of claims asserting patent infringement of window blind pull-cord mechanism. Somfy SA v. Springs Window, 6 Fed. Appx. 895 (Fed. Cir. 2000)
•Absolved client of any potential liability after patentee unreasonably delayed in asserting infringement claims regarding electric motors. Wanlass v. General Electric Co., 148 F.3d 1334, 46 USPQ2d 1915 (Fed. Cir. 1998)

Business Insights

Business Insights
4.07.11 Federal Circuit Roundtable: The Question of Inequitable Conduct
Speaking Engagement Chicago, IL
10.01.08 Patentable Subject Matter: Anything Under the Sun Made by Man...Really?, Chicago-Kent School of Law, Fifth Annual Federal Circuit Roundtable Discussion
Speaking Engagement
10.01.08 Intellectual Property Law For Non-IP Attorneys, Chicago Bar Association
Speaking Engagement
5.01.06 IAM 204 Negotiation & Ethics, Professional Development Series, Intermediate Intellectual Asset Management Workshop
Speaking Engagement
11.01.96 Mandatory Disclosure and the Rocket Dockets Accelerating the Processes of Litigation, Patent Litigation 1996, Patents, Copyrights, Trademarks and Literary Property Course Handbook Series
7.01.96 Demystifying Telecommunications and Information Policy, Columbia College
Speaking Engagement

In The News
6.21.11 Husch Blackwell Partner Contributes to Best Practices Guide on Intellectual Property Litigation
News Release


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#114,626 in weekly profile views out of 1,606,920 total lawyers Overall

Office Information

Philip D. Segrest Jr.

120 South Riverside Plaza, Suite 2200
ChicagoIL 60606-3912


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