Regeneron Pharmaceuticals Inc. is an American biotechnology company founded in 1988 by Leonard Schleifer. The company is headquartered in Tarrytown, New York and employs approximately 8,500 people worldwide. Regeneron is known for its research in the areas of cancer therapies, eye diseases, and asthma. Regeneron operates a business model based on the research and development of biotechnological drugs. The company invests heavily in research and seeks new compounds that can fight inflammation and cancer. Regeneron develops its products using the reverse transcriptase polymerase chain reaction (RT-PCR), a method for amplifying RNA molecules into DNA. This method allows for the rapid production and analysis of large amounts of genetic material. The company is divided into several divisions, including ophthalmology, inflammatory diseases, oncology, and neurology. Regeneron also produces a wide range of biopharmaceutical products, including antibodies, interleukins, enzymes, and fusion proteins. One of Regeneron's most popular products is EYLEA (Aflibercept), a medication used to treat retinal diseases such as age-related macular degeneration. EYLEA has been on the market since 2011 and has proven to be highly effective. The medication is a blockbuster for Regeneron and accounts for a significant portion of its product revenue. Another important product from Regeneron is Dupixent (Dupilumab), a medication used to treat atopic dermatitis and severe asthma. The medication has been on the market since 2017 and has quickly established itself as a key treatment for asthma. Dupixent is produced in collaboration with Sanofi. Regeneron has also conducted promising research in the field of oncology. The company has developed a range of cancer therapies that are in the clinical phase of development. One example is the antibody Libtayo, which is used to treat squamous cell carcinomas. In its recent history, Regeneron has played a major role in the research and development of antibodies for the treatment of COVID-19. Regeneron was the first company to receive funding from the US government for the development of an antibody cocktail for the treatment of COVID-19. The medication, consisting of the antibodies Casirivimab and Imdevimab, was granted emergency use authorization by the US Food and Drug Administration in November 2020. Regeneron also has an extensive partnership with pharmaceutical company Sanofi. The two companies have jointly developed products such as Praluent (Alirocumab), a medication used to lower cholesterol levels, and Kevzara (Sarilumab), a medication used to treat rheumatoid arthritis. Overall, in recent years, Regeneron has built a strong position as a leading biotechnology company. The company has an impressive product pipeline and has developed a wide range of important medications. Regeneron continues to work on the development of new therapies and has the potential to play a significant role in the biotechnology industry in the coming years.