Alright little one, let me explain what inter partes means.
When two people or companies have a dispute about something, like a patent or trademark, they may ask a court to decide who is right. Inter partes is a Latin term that refers to the legal process where these two parties present their arguments and evidence to a judge or other decision-maker.
During the inter partes process, each party gets a chance to argue their side and show any evidence they have to support their claim. They may also cross-examine witnesses and challenge the other party's evidence. The judge or decision-maker listens to both sides and then makes a decision based on the evidence and the law.
Overall, inter partes is just a fancy way of saying that two opposing parties are having a legal battle and will present their cases in front of a judge or decision-maker to resolve their dispute.