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PatIndia is started to collect, generate and represent most of the patent related information in a single platform, so that it can help Patent Analysts in their searches, analysis and prediction of competitive and technological intelligence information from patents and other informational resources.

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VBA Code - Remove invisible special characters from string

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Sometimes in excel data, we encounter various unwanted characters, spaces etc which are not cleaned by common clean function in the excel. The following function easily clear those characters. Function sFnRemoveSC(sInput As String) As String Dim lLoop As Long, sSpecialChars As String sSpecialChars = "!@#$%^&*()_+={}|[]:;'<>?,.~`" For lLoop = 1 To Len(sSpecialChars) sInput = Replace$(sInput, Mid$(sSpecialChars, lLoop, 1), " ") Next sFnRemoveSC = sInput End Function If you by "Invisible" characters mean "not on the keyboard", then use the code number and add to the string using the character code  sSpecialChars = "!@#$%^&*()_+={}|[]:;'<>?,.~`" + Chr(9) + Chr(10) Function CleanTrim(ByVal S As String, Optional ConvertNonBreakingSpace As Boolean = True) As String Dim X As Long, CodesToClean As Variant CodesToClean = Array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, _ 21, 22, 23, ...
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Determining expiration dates of US patent

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Because of recent changes in the law, an existing patent can fall in one of three categories in terms of its expiration date. If the patent application was filed after June 7, 1995, the expiration date is 20 years from the date it was filed. If the application was filed by June 7, 1995 and issued before June 8, 1978, the expiration date is 17 years from issuance. The “best-of-both-worlds clause” comes into effect if the application was filed by June 7, 1995 and issued after June 7, 1978, in which case the term is the later of 17 years from issuance or 20 years from filing. These terms are accurate for both Utility and Plant Patents, Design Patents expire 14 years from the date of grant. The filing date is determined depends on whether the application is for a provisional or non-provisional patent. For a provisional patent application: “The filing date of a provisional application is the date on which a written description of the invention, drawings if necessary, and the name of the...
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Understanding patent specification

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The specification, which is also called the disclosure, is a written description of an invention. The patent specification is drafted both to satisfy the written requirements for patentability, as well as to define the scope of the claims. While the layout of a specification varies from place to place, it is relatively consistent between the U.S. and Europe, except that B and C are unique to the U.S. For the purposes of this tutorial, the claims are described separately from the specification. The sections of a patent specification are: A. Title of the invention . The title of the invention is designed to describe the essence of the invention in a few words. B. Cross-reference to related applications. In the U.S., it is required that a patent applicant include a section titled "cross-reference to related applications". In this section, the applicant lists any provisional patent applications that they are claiming priority to, or if the application is a continuation...
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