Using Open Source Software in our own app

Referring to the response "in the mean time, until you get an attorney, It may be wise to keep track, accurately, in the code itself (with remarks) what is "open-source" and what is your work. Keep in mind that not only the actual code itself may effect ownership, but the architecture as well. For example, how you call to a library, or where the code is stored in memory." you need to make a conscious decision of what open source to use. I have had numerous clients over the years that either in the process of licensing their technology or selling their software business, that a thorough investigation was used determining the open source used. In the former, the question is to make sure that the complete set of rights can be conveyed to the licensee. In the later, it is a much larger issue of what rights can be sold to the acquirer. The recommended approach is to keep track of it, and be prepared to substitute non open source.