Solarbrook Water and Power Corp. (fka SLRW)

[9754LB851]

get it correct C - 20 yrs protection on US patents - " This web page summarizes the details. http://www.clm.com/publication.cfm?ID=489

The short version is that if a patent holder pays both the maintenance fee and a late fee, they can revive a lapsed patent any time at all, until the 20-years-from-filing date on which the patent would have expired anyway.

(This 20-year limit can also be changed by a terminal disclaimer, and by PTE patent term extension or PTA patent term adjustment, and there's a different 17-years-from-issue expiration date for patents filed before June 8, 1995. But, that's a separate story; see http://www.uspto.gov/patents/law/patent_term_calculator.jsp#heading-3 for details.)

~~~~ http://patents.stackexchange.com/questions/4735/what-is-a-lapsed-patent-and-which-concepts-if-any-may-still-be-protected-by