The claims section of a patent document describes in detail, the scope of protection granted to a patent.
A claim is said to be infringed if all the elements of the claim exists in your product. Similarly, a claim that includes process steps is said to be infringed, if all the process steps are present in the process that you intend to follow.
In other words, if all the elements in the claims of the patent map on to the features of your product, your product is infringing upon the patent rights of the patentee.
It should be noted that, if your product does not have at least one element of the claim, then your product does not infringe upon the patent rights of the patentee.
Infringement of a product/process can also be analyzed by doctrine of equivalents. If the accused product/process does not literally infringe patented invention, the accused product or process may be found to infringe under the doctrine of equivalents.
Accused product/process is said to be infringed under doctrine of equivalents if the substitute element of the accused product/process matches the function, way and result of the claimed element.
You may refer to this link for more information: http://www.invntree.com/blogs/my-product-infringing-others-patents