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| Attribute | Description |
|---|---|
| anticipated-expiration | Anticipated expiration date is calculated according to the patenting authority and document kind and reflects the maximum life of the patent assuming maintenance fees are paid and term extensions are not in place. See Anticipated and Adjusted Expiration Dates for more information. |
| adjusted-expiration | Adjusted expiration date contains a date calculated to reflect term adjustments made by the USPTO under 35 USC 154. Present for US only. See Anticipated and Adjusted Expiration Dates for more information. |
| regulatory-extension | "Yes" when true. The field appears in US records when exploitation of a patent is delayed by regulatory review (e.g., FDA review) or in other patents when a Supplementary Protection Certificate (SPC) has been issued for a patent. |
| terminal-disclaimer | "Yes" when a notice of terminal disclaimer is present. For US pre-2001, the adjusted-expiration date may incorporate a terminal disclaimer; post-2000, the adjusted date does not include the effect of a terminal disclaimer. |
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