From the date of filing of patent application to the grant is a long procedure and often disappoints the inventor for the reason that grant of patent is going to take long time and securing patent of his interest becomes a great worry till then. However, when a patent application is filed (provisional or complete specification), patent office issues a receipt on which date of filing or priority date is stated. It is worth noting that from that date, the product for which patent has been applied for or product made by a process for which patent has been applied for can be marked as “patent pending” or “patent applied for” as a warning or a notice, meaning that patent has been applied for but not yet granted.
More: https://www.origiin.com/2019/01/10/labeling-product-as-patent-pending-2/
IP Valuation 