Is it possible to patent the use of two or more existing products that would be used together? In other words I have an idea for using two existing products together for the tracking of personal records. There would be no new product just a new use of the two products together.
In general, yes, it is possible. However, if you are merely combining a couple of "known" products, then the threshold for patentability may be higher than for a completely "novel" invention. Basically, in order for a combination of known objects to be a patentable invention, it must have some "unexpected outcome" that would not be "obvious."
If you take, for example, a bottle of water and a refrigerator, and combine them to create a "method and apparatus for creating chilled water," that would not be a patentable combination, because it is both "obvious" and the outcome is not unexpected.
Now, however, if you found that your bottle of water and a refrigerator when combined in a certain way could produce some unexpected result, like perhaps a free energy source or something, then the combination MIGHT be patentable -- but the patent, if issued, would then only be enforceable against people using bottled water and refrigerators to power up something, and would not be enforceable against those merely chilling water.
This is, of course, an absurd example -- but it should make the point the combinations of known products generally require that the "outcome" of the combination be both something that a person of "ordinary skill in the art" wouldn't think up on their own, and it must have some "unexpected" outcome.
If you can meet both of those criteria, then it is certainly possible to obtain a patent on a combination of known products.
