Hi,
For the invoices themselves (not the orders data like you can do with CSV Pro or the HikaShop export button on the orders listing), there is no view to do that in HikaShop by default. You can only get them one by one.
However, with the PDF invoice plugin (
www.hikashop.com/marketplace/product/18-plugin-pdf.html
) it has an option to add an extra "invoice" button to the orders listing so that you can apply the filters you want on the orders listing, display all the elements, select them all with the checkbox at the top, and click on that "invoice" button to get a PDF of all the invoices in one fell swoop.