{"id":9004111222133298,"date":"2025-09-03T16:17:39","date_gmt":"2025-09-03T15:17:39","guid":{"rendered":"https:\/\/www.hgf.com\/?p=9004111222133298"},"modified":"2026-02-19T14:26:00","modified_gmt":"2026-02-19T14:26:00","slug":"unclear-claim-parameters","status":"publish","type":"post","link":"https:\/\/www.hgf.com\/fr\/knowledge-hub\/hgf-presents\/unclear-claim-parameters\/","title":{"rendered":"Unclear Claim Parameters"},"content":{"rendered":"<h3><strong>Video overview:<\/strong><\/h3>\n<p>Patent claims must be clear enough for a skilled person to determine scope and measure any parameters without ambiguity. If a parameter is used, the measurement method must be included in the claim unless it\u2019s common general knowledge, all known methods yield the same result, or including it would reduce clarity\u2014in which case referencing the description is acceptable.<\/p>\n<p>Objections arise when parameters are unusual, require uncommon equipment, or cannot be compared with prior art. Unclear parameters, such as particle size, viscosity, or polymer molecular weight, often lead to refusals. Removing unclear parameters may unintentionally broaden claim scope, creating added matter issues.<\/p>\n<p>To avoid problems, define parameters with correct units, describe reproducible measurement methods, and reference industry standards where applicable. Ensure methods are not limited to specific embodiments for broader applicability and clarity.<\/p>\n<div class=\"wistia_responsive_padding\" style=\"padding: 56.25% 0 0 0; position: relative;\">\n<div class=\"wistia_responsive_wrapper\" style=\"height: 100%; left: 0; position: absolute; top: 0; width: 100%;\"><iframe class=\"wistia_embed\" title=\"Unclear Claim Parameters Video\" src=\"https:\/\/fast.wistia.net\/embed\/iframe\/9d45616sqi?seo=true&amp;videoFoam=true\" name=\"wistia_embed\" width=\"100%\" height=\"100%\" frameborder=\"0\" scrolling=\"no\"><\/iframe><\/div>\n<p><script src=\"https:\/\/fast.wistia.net\/assets\/external\/E-v1.js\" async><\/script><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Video overview: Patent claims must be clear enough for a skilled person to determine scope and measure any parameters without ambiguity. If a parameter is used, the measurement method must &hellip;<\/p>\n","protected":false},"author":376,"featured_media":9004111222133353,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[507,497],"tags":[],"class_list":["post-9004111222133298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hgf-presents","category-knowledge-hub","service-patents"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Unclear Claim Parameters - HGF<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hgf.com\/fr\/knowledge-hub\/hgf-presents\/unclear-claim-parameters\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Unclear Claim Parameters\" \/>\n<meta property=\"og:description\" content=\"Video overview: Patent claims must be clear enough for a skilled person to determine scope and measure any parameters without ambiguity. If a parameter is\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hgf.com\/fr\/knowledge-hub\/hgf-presents\/unclear-claim-parameters\/\" \/>\n<meta property=\"og:site_name\" content=\"HGF\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-03T15:17:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-19T14:26:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.hgf.com\/wp-content\/uploads\/2025\/09\/Untitled-design-10-1024x576.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"576\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Emily Long\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@hgf_ip\" \/>\n<meta name=\"twitter:site\" content=\"@hgf_ip\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Emily Long\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/knowledge-hub\\\/hgf-presents\\\/unclear-claim-parameters\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/knowledge-hub\\\/hgf-presents\\\/unclear-claim-parameters\\\/\"},\"author\":{\"name\":\"Emily Long\",\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/#\\\/schema\\\/person\\\/6448009bfef4595c7093543a41ec843d\"},\"headline\":\"Unclear Claim Parameters\",\"datePublished\":\"2025-09-03T15:17:39+00:00\",\"dateModified\":\"2026-02-19T14:26:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/knowledge-hub\\\/hgf-presents\\\/unclear-claim-parameters\\\/\"},\"wordCount\":139,\"publisher\":{\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/knowledge-hub\\\/hgf-presents\\\/unclear-claim-parameters\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.hgf.com\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/Untitled-design-10.png\",\"articleSection\":[\"HGF Presents\",\"Knowledge Hub\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/knowledge-hub\\\/hgf-presents\\\/unclear-claim-parameters\\\/\",\"url\":\"https:\\\/\\\/www.hgf.com\\\/fr\\\/knowledge-hub\\\/hgf-presents\\\/unclear-claim-parameters\\\/\",\"name\":\"Unclear Claim Parameters - 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