To ATCC Valued Customers,

ATCC stands ready to support our customers’ needs during the coronavirus pandemic. Our first job is to listen to and observe what our customers need, and meet those needs with quality products and services. While we are not currently experiencing delays due to this pandemic, we expect that we could see them as the situation evolves. If you experience any issues, please contact ATCC Customer Service at For Technical questions please contact Thank you for your understanding, patience and flexibility as ATCC does everything it can to help reduce the impact of the coronavirus pandemic to our valued customers.

Certificate of Deposit

Two copies of the Certificate of deposit is provided to the depositor after the material is tested and found to be viable. A patent deposit number is assigned at this time. The deposit date is the date ATCC receives viable material and its associated completed deposit form, following authorization of shipment from ATCC.

  • If the material is found nonviable, a deposit date is not issued, and no patent deposit number is assigned. For nonviable material, ATCC provides a Certificate of Nonviability (form BP/9).