Unfortunately yes. If this happens, please contact us so we can assist you in solving this issue.Usually, we face two scenarios:1. If the destination of your package is the U.S.A and the order value is over $2.500 USD, your package will need to complete the clearance at the USA Customs border. You will be contacted by customs agents and be requested to fulfill certain informations for the U.S Custom & Border Protection according to the form 5106.Here you can download the form to start preparing the information needed and be able to speed up the process. Please remember that we take care of the customs duties and import taxes, so you will not be charged any extra fees. This may delay the estimated time of arrival of your order.2. If you have ordered a fountain pen that includes a cartridge or ink, we include inside the package a TSCA certificate that guarantees the lack of toxic substances. Despite this, sometimes the customs agents can't access it and will require us to re-send the certificate. In this case, it is the transportation company, who contacts us to solve the issue, and this might also cause some delay.