Trademark Policy

PLOS’s trademarks include “PLOS”, the PLOS globe (see image below), “Open For Discovery”, “HowOpenIsIt”, the phrase “open access” when used with the padlock as below, and other variations, uses, and derivatives of the PLOS name (collectively, “PLOS trademarks”).

Trademark Policy logo-useage-image1

Permission is Required to Use PLOS Trademarks

PLOS’s trademarks may only be used with PLOS’s written permission, and then only to the extent of and within the scope of the permission granted. Any use of a PLOS trademark that does not comply with such permission and this policy is not authorized. We require permission because PLOS stands for certain core principles (see, and we must protect both the public’s trust in the PLOS name and the viability of the PLOS platform for our community of contributing scholars. We also believe it’s important to avoid the confusion that can arise when the PLOS name and trademarks are used so as to create the false impression of a PLOS connection or endorsement.

Changing the appearance of a PLOS trademark or adding something to it does not mean that you are free to use the trademark without our permission. For example, “P-LOS”, “PLOSscience”, “PLOSLite”, “PLOSS”, “PLOHS”, “MyPLOS”, “PLOSish” “PLOSing” and the like all constitute unauthorized use of PLOS trademarks.

To request permission to use a PLOS trademark, please contact us at If you are granted permission, we will notify you in writing of the scope of your permission and what use you may make of the trademark(s), and please also comply with the guidelines below.

General Guidelines for Proper Use

The following basic guidelines apply to our licensees’ uses of the PLOS trademarks, whether on web pages, in marketing or advertising materials, and in any other manner or medium:

Proper Form – If we license you to use the PLOS trademarks, we will provide you with trademark images or files to use. The trademarks should be used in the exact form we have provided you and they may not be abbreviated, changed, or combined with any other words, symbols, or letters;

Accompanying Symbol — With the exception of “HowOpenIsIt”, each of the PLOS trademarks listed above is a registered trademark, so the symbol “®” should be used immediately to the right of the trademark whenever the trademark is used. For “HowOpenIsIt” and all other names and logos in which PLOS has trademark rights, the symbol “™” should be used immediately to the right of the trademark whenever the trademark is used. Note that “™” is superscripted, or raised;

Notice — The following notice should appear somewhere nearby (at least on the same page or on the credits page) the first use of a PLOS trademark:

“The PLOS name, trademark(s) and logo(s) used herein are the intellectual property of the Public Library of Science”

Distinguishable — In at least the place in which each PLOS trademark is used, the trademark should be set apart from surrounding text, either by capitalizing it or by italicizing, bolding, or underlining it. In addition, your website may not copy the look and feel of any PLOS website. We do not want visitors to your website to be confused about which company he/she is dealing with; and

Comply with Terms of Use — All uses of the PLOS trademarks must comply with our Terms of Use.

Amazon and the Amazon logo and AmazonSmile and the AmazonSmile logo are trademarks of, Inc. or its affiliates.


If you have questions regarding this policy or when and how you may use other PLOS content, feel free to contact us at