We have a very large patent portfolio. In fact we have one of the strongest patent portfolios around the world in natural gas engine technologies, and we're often cited by our partners and our competitors for the underlying patents we have. We have a very large team in Vancouver that is focused on protecting our intellectual property and establishing and maintaining our patent portfolio. It's not cheap to do that. We also have a process by which we encourage employees to always think outside the box with regard to new ideas, and we show them how to protect those once they are developed and established.
With regard to the protection of our intellectual property in other countries, we typically focus on who our partners are and establish our partnerships with companies with which we have a good trusting relationship to begin with. That usually establishes the grounds upon which we can then start to share intellectual property. But of course whether it's with another Canadian company or with a Chinese company, you always need to be very mindful about how this is done in the procedures you establish within your organization. Our main challenge as a company is that we're partnered with numerous different companies, all of whom are in many cases competitors, so we have to almost have our own internal competitive barriers and intellectual property protections, notwithstanding our protection of our own intellectual property.