Kleiner, Perkins, Caufield & Byers is a venture capital firm specializing in investments in incubation and early stage companies. The firm invests in breakthrough ventures focusing on greentech innovation, information technology, pandemic and bio-defense, and life sciences. Within information technology, it invests in consumer, enterprise, semiconductors, security, and communication sectors. Within pandemic and bio-defense, the firm invests in surveillance, diagnostics, vaccines, antiviral drugs, and technologies enabling large-scale manufacturing. Kleiner, Perkins, Caufield & Byers was founded in 1972 and is headquartered in Menlo Park, California, with an additional office in San Francisco, California; Shanghai, China; and Beijing, China.