Among the recommended sites to learn about existing State of the Art prior to protection for our invention, we would like to highlight the following : 

• General Information

FIZ Karlsruhe and STN International-Databases in Science and Technology-Chemistry, Engineering, Physics, Energy, Patent 

IPR-Helpdesk (European Commission) 

Patent and License Exchange 

Pricewaterhousecoopers Intellectual Property Exchange 

World Intellectual Property Organization-WIPO 

http://www.google.com/patents 

• Biotechnology

National Center for Biotechnology Information  

Biotecnología al Día

• Electricity and Electronics

IEEE 

• Physics

IOPscience 

• Civil Engineering

ASCE Research Library 

• Environment, Agronomy and Plant Sciences

Agronomy Journal 

Plant Physiology 

Ecosystems 

Journal of Dairy Science 

BMC Plant Biology 

• New Technologies

ECS Eprints Repository 

• Chemistry

RSC Publishing 

ACS Publications 

However, if what you need is information about specific businesses or even about businesses interested in specific technologies, you can consult the following sources for information: 

ESADE  

SABI ESPAÑA 

INNOVARO PHARMALICENSING