Dexcom, Inc. is a San Diego-based medical device company that develops continuous glucose monitoring (CGM) systems for diabetes management. Founded in 1999, the company introduced its first sensor in 2004 and has since become a leader in glucose biosensing technology.[1][2] The Dexcom visual identity consists of a typographic wordmark accompanied by a distinct design mark, both protected under the company’s trademark and copyright policy.[3]
Design and History
The current Dexcom logo combines the “DEXCOM” wordmark with a horizontal teardrop-shaped design element. This teardrop mark is documented in a trademark application filed by Dexcom, Inc. with the United States Patent and Trademark Office, which describes the mark as “a horizontal teardrop-shaped design.”[4] An earlier trademark filing from 2021 for the same horizontal teardrop design was published for opposition in 2022, indicating the mark has been in use by the company for several years.[5]
Dexcom’s official trademark policy identifies the company as the sole owner of its logos, stylized marks, and design marks, collectively referred to as the “Dexcom Logos.” The policy notes that these logos may only be used with express, prior, written authorization from Dexcom, and that users may scale the logos but may not modify their design, color, or relative proportions.[3]
An earlier Dexcom trademark from 2010, for “DEXCOM GLUCOSE SENSING,” described a different design: a stylized mark consisting of an upper-reaching half oval with a dot on the left side line, attached in the center to a downward-reaching half oval with a dot on the right side line.[6] This earlier mark differs notably from the current horizontal teardrop design, indicating a visual evolution in the company’s identity over time.
Meaning and Symbolism
Dexcom has not published an official explanation of the symbolism behind its teardrop-shaped logo mark. [4] The company’s trademark policy describes its marks as “reliable indicators of source and quality” but does not elaborate on design symbolism.[3]
Dexcom’s broader brand identity includes sub-brands with their own visual systems. For example, Stelo, an over-the-counter glucose biosensor product by Dexcom, received a distinct visual identity developed through a collaboration between Dexcom’s internal creative services team and the Portland-based agency Cinco Design. This partnership shaped the Stelo brand “from the ground up,” including its visual ecosystem, content, and toolkit.[7][8]
Typography and Design
Dexcom’s trademark policy explicitly prohibits third parties from imitating “Dexcom’s packaging, website design, typefaces, or any other distinctive aspect of Dexcom’s trade dress or brand identity.”[3] This indicates that the company’s typography is considered a protected element of its brand identity.
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