This is a two part question

Mark has made ten exact copies of Jim's patented invention. Mark has not sold the items and says he has no plans to do so. Has Mark infringed on Jim's patent? Explain why or why not.

Laura purchased a patented coffee maker. Because it has not been working as well as it did when it was new, Laura has replaced a few parts of the coffee maker. Is this an infringement? Explain why or why not.