THOUSAND OAKS, Calif.,?-?Amgen?(NASDAQ:AMGN) today announced that a?Delawarejury delivered a verdict in?Amgen's?favor upholding the validity of two?Amgen?patents related to PCSK9 antibodies. These patents describe and claim antibodies, like?Amgen's?innovative Repatha^??(evolocumab) product, that bind to a specific region on PCSK9 and reduce LDL-C levels in the body. This verdict follows a previous trial in?March 2016?where?Sanofi?and Regeneron admitted infringement of?Amgen's?patents and where a prior jury also upheld the validity of?Amgen's?patents. The prior jury decision was partially reversed on appeal and the case was remanded to the district court for a new trial on two validity issues. In today's verdict, the jury found that the?Amgen?patents meet the legal requirements of written description and enablement. "Today's decision protects intellectual property which is essential to innovators who are bringing forward new medicines for patients with serious diseases.?Amgen?scientists discovered and developed Repatha, which can play a key role in the fight against cardiovascular disease," said?Robert A. Bradway, chairman and chief executive officer at?Amgen. "We are thankful that the jury weighed the evidence carefully and recognized the validity of?Amgen's?patents." Today's decision follows recent decisions in the European Patent Office and the Japanese Patent Office which also rejected challenges to the validity of?Amgen's?PCSK9 antibody patents brought by?Sanofi, Regeneron and other potential competitors.?Amgen?is seeking to enforce these patents in the national courts in?Europe?and?Japan?against?Sanofi?and Regeneron. About Repatha^??(evolocumab) Repatha^??(evolocumab) is a human monoclonal antibody that inhibits proprotein convertase subtilisin/kexin type 9 (PCSK9). Repatha binds to PCSK9 and inhibits circulating PCSK9 from binding to the low-density lipoprotein (LDL) receptor (LDLR), preventing PCSK9-mediated LDLR degradation and permitting LDLR to recycle back to the liver cell surface. By inhibiting the binding of PCSK9 to LDLR, Repatha increases the number of LDLRs available to clear LDL from the blood, thereby lowering LDL-C levels. Repatha is approved in more than 60 countries, including the U.S.,?Japan,?Canada?and in all 28 countries that are members of the?European Union. Applications in other countries are pending. Important U.S. Product Information Repatha is a PCSK9 (proprotein convertase subtilisin kexin type 9) inhibitor antibody indicated:

• to reduce the risk of myocardial infarction, stroke, and coronary revascularization in adults with established cardiovascular disease.
• as an adjunct to diet, alone or in combination with other lipid-lowering therapies (e.g., statins, ezetimibe), for treatment of adults with primary hyperlipidemia (including heterozygous familial hypercholesterolemia [HeFH]) to reduce low-density lipoprotein cholesterol (LDL-C).
• as an adjunct to diet and other LDL-lowering therapies (e.g., statins, ezetimibe, LDL apheresis) in patients with homozygous familial hypercholesterolemia (HoFH) who require additional lowering of LDL-C.

The safety and effectiveness of Repatha?have not been established in pediatric patients with HoFH who are younger than 13 years old or in pediatric patients with primary hyperlipidemia or HeFH. Important U.S. Safety Information Contraindication:?Repatha is contraindicated in patients with a history of a serious hypersensitivity reaction to Repatha. Serious hypersensitivity reactions including angioedema have occurred in patients treated with Repatha. Allergic reactions:?Hypersensitivity reactions (e.g. angioedema, rash, urticaria) have been reported in patients treated with Repatha, including some that led to discontinuation of therapy. If signs or symptoms of serious allergic reactions occur, discontinue treatment with Repatha, treat according to the standard of care, and monitor until signs and symptoms resolve. Adverse reactions:?The most common adverse reactions (>5% of patients treated with Repatha and occurring more frequently than placebo) were: nasopharyngitis, upper respiratory tract infection, influenza, back pain, and injection site reactions. From a pool of the 52-week trial and seven 12-week trials: Local injection site reactions occurred in 3.2% and 3.0% of Repatha-treated and placebo-treated patients, respectively. The most common injection site reactions were erythema, pain, and bruising. Allergic reactions occurred in 5.1% and 4.7% of Repatha-treated and placebo-treated patients, respectively. The most common allergic reactions were rash (1.0% versus 0.5% for Repatha and placebo, respectively), eczema (0.4% versus 0.2%), erythema (0.4% versus 0.2%), and urticaria (0.4% versus 0.1%). The most common adverse reactions in the Cardiovascular Outcomes Trial (>5% of patients treated with Repatha and occurring more frequently than placebo) were: diabetes mellitus (8.8% Repatha, 8.2% placebo), nasopharyngitis (7.8% Repatha, 7.4% placebo), and upper respiratory tract infection (5.1% Repatha, 4.8% placebo). Among the 16,676 patients without diabetes mellitus at baseline, the incidence of new-onset diabetes mellitus during the trial was 8.1% in patients assigned to Repatha compared with 7.7% in those assigned to placebo. Homozygous Familial Hypercholesterolemia (HoFH):?The adverse reactions that occurred in at least two patients treated with Repatha and more frequently than placebo were: upper respiratory tract infection, influenza, gastroenteritis, and nasopharyngitis. Immunogenicity:?Repatha?is a human monoclonal antibody. As with all therapeutic proteins, there is a potential for immunogenicity with Repatha. Please contact Amgen Medinfo at 800-77-AMGEN?(800-772-6436) or 844-REPATHA (844-737-2842) regarding Repatha?availability or find more information, including full?Prescribing Information, at?www.amgen.com?and?www.Repatha.com. About?Amgen Amgen?is committed to unlocking the potential of biology for patients suffering from serious illnesses by discovering, developing, manufacturing and delivering innovative human therapeutics. This approach begins by using tools like advanced human genetics to unravel the complexities of disease and understand the fundamentals of human biology. Amgen?focuses on areas of high unmet medical need and leverages its expertise to strive for solutions that improve health outcomes and dramatically improve people's lives. A biotechnology pioneer since 1980,?Amgen?has grown to be one of the world's leading independent biotechnology companies, has reached millions of patients around the world and is developing a pipeline of medicines with breakaway potential. For more information, visit?www.amgen.com?and follow us on?www.twitter.com/amgen. Forward-Looking Statements?????????????????????????????????????????????????????????????????? This news release contains forward-looking statements that are based on the current expectations and beliefs of?Amgen. 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