Monogram patterns: Generally, the first area you will notice when you glance
at a LV item is the monogram pattern. Making it the
best place to start when investigating possible counterfeit Louis Vuitton merchandise. The
monogram pattern becomes the initial point of contact.
And Louis Vuitton has several distinct monogram symbols. Each symbol has been
trademarked by Louis Vuitton at different times throughout their history, and they are
Figure I: Relevant list of Louis Vuitton trademarked symbols 
|Symbol||Registration Number||Registration Date||Items|
|0,297,594||Sep 20, 1932||This was trademarked for items such as luggage trunks, traveling bags, shoulder (satchel) bags, pocketbooks, evening bags (clutches), travel cases for hats and shoes (luggage), everyday handbags|
|Everything sold by Louis Vuitton ® [handbags, checkbook holders, jewelry, watches, luggage, phone cases etc]|
|Everything Louis Vuitton, from watches and jewelry to purses, bags etc.|
|2,177,828||August 1998||Trademarked for all pieces of the Louis Vuitton collection, this pertains to all precious metal items (belt buckles, jewelry etc), watches, all leather goods (travel bags, purses etc), all apparel items (suits, socks, bath robes etc).|
| 2,181,7533 |
|™ for all pieces of the Louis Vuitton collection, this covers all precious metal items (bracelets, earrings etc), all leather goods (luggage, handbags etc), all apparel items (shirts, underwear, dresses, jackets, etc).|
|™ of the Louis Vuitton collection, this covers sunglasses, spectacles etc, precious metal items (cufflinks, necklaces etc), horological and chronometric instruments and apparatus, (watches, watch_cases, clocks etc), all leather goods (rucksacks, bags etc), all apparel items (t-shirts, hosiery, sweaters, etc).|
Therefore these (aforementioned) monogram symbols on any non-Louis_Vuitton item is considered trademark infringement and would indicate that the item is obviously counterfeit. And there are generally two categories of counterfeit items: Deceptive and non-Deceptive .
(i) Deceptive counterfeit: The manufacture's intention is to sell the item as if it was the authentic version. The buyers in the case of deceptive counterfeits do not know they are buying a fake. These types of counterfeits often fetch high premiums.
(ii) Non-deceptive counterfeit: The manufacture is selling the item as a 'replica', or 'knock-off' item. The buyers in the case of non-deceptive counterfeits know they are buying a fake. This class of counterfeit often sells for much cheaper.
For the purpose of this tutorial, we are concerning ourselves with deceptive counterfeit items.
Step 1: How Louis Vuitton arranges the trademarked symbols on their products is one of the fastest and easiest ways to detect a counterfeit. The monogram patterns on authentic items should line up symmetrically. This means that whatever symbol (from Figure I) starts the sequence, that symbol must also end the sequence.
Figure 2: Symmetric sequence, starting and ending with the same symbol
Figure 3: Example of Louis Vuitton symbol sequence on Speedy bag
(*) Also notice that the symbol starting and ending the sequence is a partial symbol. This is an important point. It is ok if the sequence starts with a partial symbol, however, whatever the symbol percentage is that begins the sequence, that same percentage should then end the sequence. (In the case of the example above, you can see that 1/2 of the circle symbol starts the sequence, and it is the same 1/2 circle symbol that ends it). This is a standard symmetry that an authentic Louis Vuitton item should demonstrate, and a quality detail that many of the fake_Louis Vuittonmonogram patterns will get wrong. (Not in all cases, but a number of fakes can be quickly eliminated this way. Some fakes [the higher quality] will have this detail correct).
Caveat: The partial symbol is something that Louis Vuitton does with the three (non-LV) symbols. The LV symbol is generally not used as a partial. It should be in complete form on Louis Vuitton items, and not severed by seam lines.
Figure 4: Monogram pattern with LV symbol
Guideline: The LV symbol will generally be in complete form within the Louis Vuitton monogram pattern.
Figure 5: Fake Louis Vuitton monogram pattern
FAQ about the LV partial symbol:
Can the LV symbols ever be partials on an authentic Louis Vuitton?
YES. There are a few exceptions when Louis Vuitton will cut a LV logo. But these are rare. What you will find is that the vast majority of the time when you (the e-commerce shopper) encounter a cut LV logo, you will quickly find that the item is a counterfeit. This a solid rule of thumb guideline, and there is no need to create further confusion with blanket statements such as, the LV sliced logo is not always accurate. Because, 1) the counterfeiters are the only party that will benefit from the confusion, and 2) finding a sliced LV (partial symbol) on an authentic LV bag is such a rare event that it is not statistically significant in any meaningful way.
However, if (and when) you do encounter a partial LV logo and discover that the bag is a fake, that particular bag will most likely be considered a lower quality fake. Therefore, a handbag that is fake that has a partial LV symbol will undoubtedly have other signatures of its counterfeit origin somewhere else on the bag. Meaning that counterfeits with sliced LV symbols will generally represent a lower class of fakes, many of which might be considered non-deceptive counterfeits. The types of fakes you will find in thrift shops or on street corners. Therefore, if you find an LV logo that is sliced, and everything else looks perfect (which will be rare), in that case you might consider that you have encountered one of the rare authentic exceptions. However, if you find yourself in one of these rare cases, we recommend that you get a second opinion about the handbag before buying.