Many budget airlines use secondary or remote airports to keep costs down.
Budget carriers also use secondary or tertiary airports, where lower airport taxes allow cheaper operating costs.
The no-frills use secondary airports in some cities because they are cheaper and have fewer slot restrictions.
"Big drug companies are becoming much more aggressive in trying to use secondary patents to delay generics," Mr. Zisson said.
The trade group said it was also exploring new strategies for having business travelers use secondary airports to save money and reduce delays, and channeling more business to low-fare airlines.
The decision also sends a warning to other brand-name drug companies not to use secondary patents unfairly to keep generic companies from selling lower-priced versions of products once the main patent has expired.
But those who will perhaps have more clout are the growing number of artists, including Elton John, Adele, Mumford & Sons, Little Mix, Royal Blood and Coldplay, who have become increasingly vocal in the past few years in their opposition to the way touts are allowed to use secondary sites.
The letter argues this approach would be in breach of the Climate Change Act and reiterates the CCC's recommendation that the Energy Bill use secondary legislation to include a carbon target for the electricity sector of 50gCO2/kWh that would come into place from 2030 and effectively ban the use of both coal and gas fired power plants without CCS technology.
These airlines also tend to use secondary or relatively remote airports, which is how Michael O'Leary, the famously brash chief executive of Ryanair, the biggest budget carrier in Europe, found out about it.
The school could choose from a menu of options, or performance assessments, including, for instance, research assignments requiring students to use secondary sources or a real-world math problem that asks students to use and apply multiple skills.
We also use secondary data to control for area-level characteristics such as density, socio-economic stratum, unemployment, and crime.
