| Trademark | Trademark Holder |
|---|
| L | Perfex Corporation |
| L/S | Cole-Parmer Instrument Co. |
| L | Perfex Corporation |
| L/S | Cole-Parmer Instrument Co. |
| L | Perfex Corporation |
| L/S | Cole-Parmer Instrument Co. |
| L4 | Pelican Products |
| LA Taq | TaKaRa Shuzo Co. |
| La-Pha-Pack | La-Pha-Pack |
| Lab Armor | Lab Armor |
| Lab Essentials | GE Healthcare |
| Lab File | Wheaton Inc. |
| Lab Lemco | Thermo Fisher Scientific |
| Lab Lids | Hubbard Scientific |
| Lab Pal | Brady Corp. |
| Lab Vision | Thermo Fisher Scientific |
| Lab Vision Autostainer | Thermo Fisher Scientific |
| Lab-Aids | Lab-Aids, Inc. |
| Lab-Aire | Bel-Art Products |
| Lab-Jack | Boekel Scientific |
| Lab-Line | Thermo Fisher Scientific |
| Lab-Tek | Thermo Fisher Scientific |
| Lab-View | Diversified Woodcrafts |
| LabAid | Thermo Fisher Scientific |
| LabAlliance | Scientific Systems |
| LabChip | Caliper Life Sciences, Inc. |
| Labconco | Labconco |
| LabConnect | Thermo Fisher Scientific |
| LabCooler | Thermo Fisher Scientific |
| Label IT | Mirus Corporation |
| Label-Off | Bel-Art Products |
| Labelizer | Brady Corp. |
| LabelMark | Brady Corp. |
| LabGlass | LabGlass |
| LabGuard | Minigrip/Zip-Pak |
| LabHand | Diversified Woodcrafts |
| LabLink | Medical Analysis Systems |
| LabLink xL | Thermo Fisher Scientific |
| LabMaster SI | Lightnin |
| Labmat | Bel-Art Products |
| Labomed | Labo America |
| Laboport | KNF Neuberger |
| Labpette | Labnet International, Inc. |
| LabpetteR | Labnet International, Inc. |
| LabPRO | Rheodyne LLC |
| LABQUAKE | Lab Industries |
| Labquake | Thermo Fisher Scientific |
| LabRecord | Thermo Fisher Scientific |
| LabReporter | Fisher Scientific |
| Labscale | Millipore Corp. |
| Labset | Kimble Glass |
| LabSolutions | Labconco |
| Labsonic | Sartorius |
| LabStation | Edvotek |
| Labstix | Bayer Corp. |
| Labsystems | Thermo Fisher Scientific |
| Labtainers | Thermo Fisher Scientific |
| LabTemp | Biosynergy, Inc. |
| LABTITE | RD Plastics |
| LabTop | Control Co. |
| LabTrace | Fisher Scientific |
| LabVision | Diversified Woodcrafts |
| Labworldsoft | IKA Works |
| Labwriter | Thermo Fisher Scientific |
| LabX | Mettler Toledo |
| Labx | Berkshire Corp. |
| LABXPERT | Brady Corp. |
| LaChromUltra | Hitachi |
| LaCrosse Rainfair | LaCrosse Rainfair Safety Products |
| Ladderman | TaKaRa Shuzo Co. |
| Ladies Metal | H.L. Bouton |
| Ladish | Ladish Co. Inc. |
| Lamba | American Allsafe Co. |
| Lambda | Corning |
| Lambda ZAP | Stratagene |
| LambdaGEM | Promega Corp. |
| LaMotte | LaMotte Chemical Products Co. |
| Lancer | Sherwood Medical |
| Lands' End | Lands End |
| Lanoxin | Glaxo Wellcome Inc. |
| LANtastic | Artisoft, Inc. |
| LanthaScreen | Invitrogen Corporation |
| Lanx | Xymid, L.L.C. |
| LapLink | Traveling Software |
| Laser Film Technology | Millipore Corp. |
| Laser Guide | Raytek Corporation |
| Laser Point | Raytek Corporation |
| Laser Spot | Pelican Products |
| Laser-Aid | Sperian |
| Laser-Gard | Glendale Protective Technologies |
| Laser-Line | Glendale Protective Technologies |
| Laser-Lite | Howard Leight |
| Laser-Med | Glendale Protective Technologies |
| Laser-Trak | Howard Leight |
| Laserflex | Pelican Products |
| LaserJet | Hewlett-Packard |
| Last-Drop | Alltech Associates |
| Latitude | CBM Intellectual Properties, Inc. |
| Latitude HT | Cambrex Corporation |
| Lauda | Lauda Dr. R. Wobser |
| Lavoptik | H.L. Bouton |
| LBS | BD (Becton, Dickinson and Company) |
| LC IsoLink | Thermo Fisher Scientific |
| LCQ | Thermo Fisher Scientific |
| LCQ FLEET | Thermo Fisher Scientific |
| LCQuan | Thermo Fisher Scientific |
| LCx | Abbott Labs |
| LD-Achroplan | Carl Zeiss |
| Le Maitre | Le Maitre |
| Leakator | Bacharach Inc |
| Leakbuster | Starplex Scientific |
| Leap | Leap Technologies |
| Learning Clock | Learning Resources, Inc. |
| Leco | Leco |
| Legaci | Thermo Fisher Scientific |
| Legal Sea Foods | Legal Sea Foods |
| Legend | Thermo Fisher Scientific |
| Leica | Leica Microsystems, Inc. |
| Leight | Howard Leight |
| Leightning | Howard Leight |
| LeLoop | Decon Laboratories |
| Lemo | Interlemo Holding S.A. |
| Lens Pod | Eye Safety Systems |
| Lensclean | H.L. Bouton |
| Lenscope | Bausch & Lomb, Inc. |
| LensPen | Parkside Optical, Inc. |
| Lensx | Berkshire Corp. |
| Lenzing FR | Lenzing Aktiengesellschaft |
| LeStab | Decon Laboratories |
| LeStreak | Decon Laboratories |
| Let's Tackle Math! | Learning Resources, Inc. |
| Leucolab | Maco Pharma |
| LEUKO EZ VUE | Techlab Enteric Diagnostics |
| LeukoStat | Fisher Scientific |
| Levitron | Creative Gifts, Inc. |
| Lexa | Aearo Technologies |
| Lexan | General Electric Co. |
| Lexmark | Lexmark International Inc. |
| LGT | Bacou-Dalloz |
| LI-COR | LI-COR Biosciences |
| LIAISON | DiaSorin S.p.A. |
| Liberase | Roche Diagnostics |
| LichroCART | Merck KGaA, Darmstadt, Germany |
| LiChrosorb | The Merck Group |
| LiChrospher | The Merck Group |
| LidBac | Brinkmann Instruments |
| Life | Life Corporation |
| Life Technologies | Life Technologies, Inc. |
| LIFECYCLE | USCS Equipment Technology Solutions |
| LifeLocator II | UltraVision Security Systems, Inc. |
| Lifenet | Kappler USA |
| LIFEOXYGENPAC | Life Corporation |
| LIFEPAK | Physio-Control Corporation |
| LifeSaver | Emergency Medical Instrument Co. |
| LifeScan | Johnson & Johnson |
| LifeSecure | LifeSecure Emergency Solutions |
| Lifetime Red | Corning |
| LifterSlip | Thermo Fisher Scientific |
| Ligation Express | Clontech Laboratories, Inc. |
| Light 'N' Strike Math | Learning Resources, Inc. |
| Light Sticks | Cyalume Technologies |
| Light Task II | North Safety Products |
| Light Task Plus 3 | North Safety Products |
| LightCycler | Roche Diagnostics |
| LightHawk | Koehler-Bright Star, Inc. |
| Lightnin | Lightnin |
| Lightning | BioControl Systems |
| Lightning MVP | BioControl Systems |
| Lightning Volt | Thermo Fisher Scientific |
| LightShift | Thermo Fisher Scientific |
| LIN-C | Coulter International Corp. |
| LINAC | AB SCIEX |
| Linbro | MP Biomedicals |
| Lincoln Logs | Playskool, Inc. |
| Lindberg/Blue M | Thermo Fisher Scientific |
| Linear | Thermo Fisher Scientific |
| Linear | Thermo Fisher Scientific |
| Linear | Simmler, Inc. |
| Linear-K | Whatman Inc. |
| LinenTest | Carson Optical |
| LiniCal | International Enzymes, Inc. |
| Linistain | Thermo Fisher Scientific |
| Linistat | Thermo Fisher Scientific |
| Link 'N' Learn | Learning Resources, Inc. |
| Link-Lock | Enpac Corp. |
| LINK2 | BD (Becton, Dickinson and Company) |
| LintGuard | Kimberly-Clark Corp. |
| Linux | Linus Torvalds |
| LipiMate | Thermo Fisher Scientific |
| LipoClear | StatSpin Technologies, Inc. |
| LipoTAXI | Genetic Applications |
| Liqua-Trol | Hycor Biomedical |
| LiquiChem | Hematronix Inc. |
| Liquid Handling Control | Agilent |
| Liquid QC | International Enzymes, Inc. |
| Liquihep | BD (Becton, Dickinson and Company) |
| Liquimmune | Thermo Fisher Scientific |
| LiquiNox | Alconox |
| LiquiPhysics | Mettler Toledo |
| Liquiport® | KNF Lab |
| LiquiSystems | Mettler Toledo |
| Lite 'n Grit | Norcross Safety Products |
| Lite Force Plus | Morning Pride Manufacturing |
| Lite Mite | Stocker &Yale |
| LiteBox | Streamlight, Inc. |
| LiteLine | Flexlite Inc. |
| LiteTouch | Rainin Instrument Co., Inc. |
| Little Nicky | Array Medical |
| Little Shot | Boekel Scientific |
| LiveCell | Molecular Cytomics Inc. |
| Lizard | Spellbound Development Group, Inc. |
| Llbean | L.L. Bean |
| LMW | Triangle Biomedical |
| Lo-Dose | BD (Becton, Dickinson and Company) |
| Load 'n GLO | Mirus Corporation |
| Load and Lock | Ziamatic Corporation |
| LOCATE | R-Biopharm Rhone, Ltd. |
| Locator | Thermo Fisher Scientific |
| Lock-A-Lens | Aearo Technologies |
| Lockalarm | MSA |
| Lockin' Arm | American Allsafe Co. |
| LockSafe | Tennessee Mat Company, Inc. |
| Lockview | CompX Security Products |
| LockWell | Thermo Fisher Scientific |
| Loctagon | Wheaton |
| Loctite | Loctite Corporation |
| Logal | Riverdeep Interactive Learning Limited |
| Logic | Labconco |
| Logic+ | Labconco |
| LogR | Thermo Fisher Scientific |
| LogStraight | Mettler Toledo |
| Lok-Kit II | Curtis Computer Products |
| Lok-Tor | Milwaukee Electric Tool |
| Lollipop | Control Co. |
| Lon | Echelon Corp. |
| Loncet | Tecnol, Inc. |
| Long Ranger | BioWhittaker Molecular Applications |
| Long-Length | Oak Technical Inc. |
| Longlife | Spectronics Corp. |
| LongLine | Phoenix Medical Technology |
| LonMaker | Echelon Corp. |
| LonMark | Echelon Corp. |
| Lontalk | Echelon Corp. |
| LonWorks | Echelon Corp. |
| Looney Tunes | Time Warner Entertainment Company |
| LoopMop | Micronova Manufacturing |
| LopHene | Decon Laboratories |
| Loprodyne | Pall Corporation |
| Lotion Soft | Steris Corp. |
| Lotus | Lotus Development |
| Loudmouth | Earmark Inc. |
| LoVial | National Scientific Co. |
| Lovibond | Tintometer Ltd. |
| Low Maintenance Triode | Thermo Fisher Scientific |
| Low Pro | American Allsafe Co. |
| LowBot | Thermo Fisher Scientific |
| Lowboys | Nalge Nunc International |
| LpH | Steris Corp. |
| LS1000 | Thermo Fisher Scientific |
| LS250 | Thermo Fisher Scientific |
| LSI | Abbott Molecular |
| LSM | Organon Teknika B.V. |
| LTF | Quidel Corp. |
| LTQ | Thermo Fisher Scientific |
| LTQ FT | Thermo Fisher Scientific |
| LTQ FT ULTRA | Thermo Fisher Scientific |
| LTQ Orbitrap | Thermo Fisher Scientific |
| LTQ ORBITRAP DISCOVERY | Thermo Fisher Scientific |
| LTQ ORBITRAP ETD | Thermo Fisher Scientific |
| LTQ Orbitrap Velos | Thermo Fisher Scientific |
| LTQ ORBITRAP XL | Thermo Fisher Scientific |
| LTQ Velos | Thermo Fisher Scientific |
| LTQ XL | Thermo Fisher Scientific |
| LTS | Rainin Instrument Co., Inc. |
| LubeRite | Justrite Mfg. Co. |
| Lubri-Flo | Kimble Glass |
| Lubriseal | Thomas Scientific |
| Luciferin-EF | Promega Corp. |
| Lucite | E.I. duPont de Nemours |
| LucLite | Packard Instrument Co. |
| Ludox | E.I. duPont de Nemours |
| Luer-Lok | BD (Becton, Dickinson and Company) |
| LUM-T | Charm Science |
| Lumarod | Brock Optical, Inc. |
| Lumi-Phos | Lumigen |
| Lumi/Kit | Fotodyne |
| LumiDome | Carson Optical |
| Lumigen | Lumigen, Inc. |
| LumiGLO | KPL, Inc. |
| LumiGLO Reserve | KPL, Inc. |
| LumiLoupe | Carson Optical |
| Luminal | Abbott Labs |
| Luminaris | Thermo Fisher Scientific |
| Luminator | MSA |
| Luminex | Luminex Corp. |
| Luminex 100 | Luminex Corp. |
| Luminoskan | Thermo Fisher Scientific |
| Luminox | Alconox |
| LumiNunc | Thermo Fisher Scientific |
| Luna | Phenomenex Inc. |
| Lux | Lux Scientific, Inc. |
| Luxeon | Streamlight, Inc. |
| Luxol | E.I. duPont de Nemours |
| LVI | Wheaton Inc. |
| LXQ | Thermo Fisher Scientific |
| LxT | Kimberly-Clark Corp. |
| LxTech | Safeskin Corp. |
| Lycra | E.I. duPont de Nemours |
| LYFO DISK | Microbiologics |
| LyfoCults | Quality Technologies, LLC |
| Lymphoprep | Axis-Shield PoC AS |
| LymphoSep | MP Biomedicals |
| Lynx | Merck KGaA |
| Lynx | MSA |
| LyoCheck | Thermo Fisher Scientific |
| Lyph-Lock | Labconco |
| LyphoCells | Edvotek |
| LyphoProteins | Edvotek |
| LyphoSample | Edvotek, Inc. |
| Lyse S | Coulter International Corp. |
| Lyse-N-Go | Thermo Fisher Scientific |
| Lysol | Lehn &Fink Products Corporation |
| LYSYS | BD (Becton, Dickinson and Company) |
| LYTE·TRAK | Fisher Scientific |
| Lytening | Baxter Healthcare |