Enough has been said about bad treatment by border guards about every country on earth so don't need to repeat it but I had the following exchange with a Canadian visa officer. Visa Officer:Your Name? How can I help you Me: Dr XYZ. I would like to apply for a visitor visa to Canada Visa Officer: Why would you like to go to Canada Me: I have been invited to speak at a conference Visa Officer: Hmm I see. Me: Is there a…
As a rule answers have to be as general as possible. The more specific information you give them voluntarily, the more they can find something to latch on and make your life miserable. Leave it up to them to ask more details. I wasn't a speaker at my last conference, but I could have been. But my conversation at the border was something like: "Why are you visiting Canada?" / "To go to a conference" / "Where is the co…
So, sort of the same strategy used for patent claims?