Calculating US Expiry Dates - GenericsWeb

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Example 4.

[22] = 04/06/1996, thus use Rule 2. Earliest related application + 20 years = 04/08/2009.

Thus full-term expiry is 04/08/2009.

Example 5.

[64] = Reissue of US4943590, thus full-term expiry of USRE34712 is identical to the full-term expiry

of US4943590. To calculate the full-term expiry of US4943590, refer to the front page of the patent

directly.

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Example 4. [22] = 04/06/1996, thus use Rule 2. Earliest related application + 20 years = 04/08/2009. Thus full-term expiry is 04/08/2009. Example 5. [64] = Reissue of US4943590, thus full-term expiry of USRE34712 is identical to the full-term expiry of US4943590. To calculate the full-term expiry of US4943590, refer to the front page of the patent directly.

[22] = 08/06/1989, thus use Rule 1. No related application, thus use [22] filing date + 20 years = 08/06/2009. [45] = 24/07/1990 + 17 years = 24/07/2007. Expiry is the later of the two dates, thus full-term expiry is 08/06/2009. Example 6.

Page 1 and 2: Calculating US Expiry Dates To calc
Page 3: Example 2. [22] = 23/10/1996, thus
Page 7 and 8: Example 7. [22] = 10/01/2002, thus
Page 9 and 10: For the sake of brevity, the full-t
Page 11 and 12: Appendix 1 - Finding PTAs in PAIR.
Page 13: Appendix 3 - Verifying data in PAIR

Calculating US Expiry Dates - GenericsWeb

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