Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to submit a patent [title] Invent an original design, mechanism, plant or appliance that is marketable. [title] Keep notes on all steps taken in the invention process. [step] These notes will be helpful when the time comes to make a presentation to a patent examiner.

Ending1: If you are still unsure, ask the patent examiner any questions you may have. [title] Have a warm-up planned out prior to the presentation by experts or managers. Ending2: [title] Follow the patent procedure calculated in step 1. [title] Use the invention method outlined in part 2. Ending3: The notes should contain important details including dates, times, roles of witnesses or assistants, and locations. [title] Determine the type of patent required for the invention. Ending4: [title] Plan before the interview if it is possible. [step] The following requirements should be met before the proceedings begin : [substeps] Give a short description of the invention or device you are attempting to patent.

Answer format: ending1/ending2/ending3/ending4